Risk of Extended Oil Change Intervals
Posted February 14, 2012 2:28 PM
Nothing in your engine workers harder than your oil. With hundreds of moving parts, and thousands of explosions every minute, it's no wonder that engine oil needs to be changed frequently!
You've probably heard the old rule of thumb: Change your oil every 3,000 miles/ 5,000 kilometers or 3 months, whichever comes first. But some car manufacturers have introduced extended oil change intervals. They figure that a modern vehicle driven under the right conditions can go for 5,000 miles/8000 kilometers or more between an oil change.
The key phrase here is "under the right conditions". If you look at your owner's manual, you'll see two different maintenance schedules: one for "normal" driving conditions and one for "Severe Service". Severe service driving conditions include stop and go, short trips, towing, hauling, hot, cold, and dusty driving. That's why at AutoNetTV we often refer you to the severe service schedule in your owners' manual, because, for most of us California car owners, that's the way we use our vehicles in everyday life.
Recently, four of the largest auto manufacturers in the world have extended engine warranty coverage for engine damage caused by oil sludge resulting from longer oil change intervals. They found that real-world conditions require more frequent oil changes than the 7,500mi/12,000 km interval they were recommending. They subsequently recommended more frequent oil change intervals and proof of timely oil changes in order to qualify for the extended warranty.
Oil sludge is the culprit. Sludge is oil that has turned to a thick, jelly-like consistency. Sludge can block passages in the engine, preventing oil from lubricating vital engine parts. Parts wear more quickly and may fail prematurely.
Sludge is caused by several factors. The first one is simply - time. The engine oil is contaminated by exhaust gas that eventually leads to sludge. That is where the recommendation to change your oil at least every three months comes from. Sludge can also come from oil that gets contaminated by water from normal condensation. A few minutes of driving at California freeway speeds allows the oil to heat up enough for the water to evaporate. The problem is we often run errands or take other short trips that don't allow the engine to warm up enough for the water to evaporate. This is especially true in winter. Sludge also forms when the engine gets too hot, causing the oil to breakdown. Stop and go summer driving, towing and hauling are all prime conditions for creating harmful sludge. And every engine has hot spots that create sludge.
Given all of these factors, estimating when to change your oil is pretty complicated. A couple of manufacturers have computer programs built into their vehicles that record the number of cold starts, how many times the cylinders fire, engine temperature and other factors. From that, the computer estimates when you should change your oil and flashes a warning. But what if you do not have a vehicle with this feature? How do you know when to change your oil? We're not sure you really can. Which is why it is better to be safe than sorry. 3,000 mi/5,000 km or three months - whichever comes first - talk with a service advisor at Robert's Auto Repair in Monterey and see if that's a good recommendation for the way you drive.
Posted in the Maintenance category
Keeping Your SUV Young
Posted February 7, 2012 11:21 AM
Sometimes it seems in Monterey we live in such a disposable society. It's amazing all the stuff we throw away.
New stuff comes out so fast, we just toss the old and move on. It seems like when we were kids in Monterey, our parents were real sticklers about taking care of our stuff. You know, hang up your clothes, polish your shoes, put away your toys. If something got lost or ruined by neglect, tough, we had to do without.
We couldn't afford new cars very often, so we tried to make them last as long as we could. It's a good thing that cars are more reliable these days. They just don't break down as often. And the good news for us Monterey penny pinchers is that a modern car can easily go 200,000 miles with proper care. The engineering's there and so is the manufacturing quality. The missing ingredient is us making sure we follow the manufacturer's recommended maintenance schedules.
Is it really that bad to get off schedule? Well, it all adds up. Every time you go a couple thousand extra miles between oil changes, you've created an opportunity for sludge to form and clog passages. Then some parts don't get oiled and they start to wear out faster.
Skip a cooling system service, and the corrosion inhibitors become depleted, and the radiator starts being damaged – one step closer to a failure. The same thing is true for transmission service, power brakes, fuel system cleaning – really everything on your schedule.
It's also even more important for older vehicles in the Monterey area. Those engines and other systems have had more time to get dirty, so they're a bit more stressed anyway. But it's never too late to get back on track with your maintenance and to hold off further damage.
It's just another example of our parents being right. (Surprising how often that happens.) And it really does start with the oil change, just like Dad said. When you get a full service oil change they top off all your fluids and check for other items that are on your maintenance schedule. That's like your safety net; go in for oil changes on time, and let your service advisor at Robert's Auto Repair in Monterey help you keep track of the rest.
Of course, some things are going to wear out along the way, stuff like alternators, water pumps and such. But that stuff is cheaper than a new car payment. And taking care of problems early means they have less time to cause other problems. It's like having high cholesterol; you don't want to wait for a heart attack before you address it.
Robert's Auto Repair
234 Ramona Ave
Monterey, California 93940
8313731534
Posted in the Maintenance category
Saving Lives In Monterey With Tire Pressure
Posted January 31, 2012 9:55 AM
All new passenger vehicles on our Monterey California roads now have tire pressure monitoring systems – TPMS for short. They are designed to alert you if your tires are under inflated. Since they are fairly new, a lot of people have questions about TPMS.
First off, the most important thing is that you still need to check your tire pressure every week – or at least every time you gas up. The TPMS system alert comes in when your tire is twenty percent below the factory recommendation. So if the recommended pressure is thirty five pounds per square inch, the TPMS warning won't come on until the pressure is at twenty eight pounds. That's significantly under-inflated. Enough to raise safety concerns.
The worst is tire failure. A severely under inflated tire can overheat and fail. Also, handling degrades to the point that you may not be able to steer out of trouble. Also under-inflated tires wear out faster and they waste fuel. So it's costly to not stay on top of proper inflation.
What's the practical value of the TPMS system? Well, it's twofold. First, it can alert you when your tire is losing pressure due to a puncture or a bent rim. That's an important warning that you might not have gotten until next time you gassed up.
The second is that we all occasionally forget to check our tire pressure. So it's a failsafe system to let you know there's a problem brewing.
Other things can cause your TPMS system to go off. The system also monitors itself. The sensors that are mounted in the wheels have little batteries that send a signal to the monitor. The batteries go dead over time and the TPMS system will let you know. And the sensors could break. Also road salt from our Monterey California roads can ruin them.
There's also a hassle factor that your Monterey California tire center has to contend with. For example, when you have your tires rotated in Monterey, the TPMS system has to be re-calibrated so that it knows which tire is on which corner of the car. Same is true for when you have new tires or winter tires installed. Flat repairs, as well.
That takes extra time. And it requires the right equipment and training. Special – and expensive – tire change machines need to be used with some sensors. It's all complicated by the fact that there are a number of different TPMS systems in use so the tire professionals at Robert's Auto Repair need equipment and training for each kind. Tire centers have had to raise the price of some of these basic services to offset their increased costs.
Also if you add custom wheels on your SUV, you need to put in new TPMS sensors if your originals won't work on the new rims. If you don't your TPMS light will be on constantly and you won't have the benefit of the warning system.
All in all, the mandated TPMS systems will save lives, so they're worth the added hassle and expense.
Posted in the Tires and Wheels category
Monterey Tire Repair
Posted January 24, 2012 11:03 AM
Most folks around Monterey have had a flat tire. You know it’s inconvenient and a pain. Our tires are important. Keeping them in good working order isn’t just a big safety issue – it also has a financial impact. With high gas prices, we’ve all heard about the importance of keeping proper tire pressure to save on gas. In addition, proper inflation promotes even tread wear so your tires last longer.
There’s another danger to under-inflated tires. Low tire pressure puts added stress on the structure of the tire itself, causing it to break down prematurely. Also, under-inflated tires generate more heat which also reduces tire life. So get those slow leaks fixed quickly – don’t just keep airing them up every few days. You want to avoid serious tire damage.
Tires can also be damaged by road hazards in and around Monterey. Punctures, cuts and impacts on curbs or potholes can also cause damage that could lead to tire failure. Sometimes, it’s something that a visual inspection would reveal. Take the opportunity to check your tires when you’re gassing up. Look for slashes, missing chunks, nails or screws in the tread or just uneven wear. Of course check the air pressure too.
Now tire damage can be on the inside where you can’t see it until it’s removed from the wheel. Such damage could come from a severe impact, driving on a flat or even just low pressure. Some punctures can cause internal damage that are too severe to be repaired. You may see our Robert's Auto Repair professionals take the time to remove your flat from the rim and inspect the inside before repairing it, which means we're just following good procedure.
Now some tires just can’t be repaired. A puncture may be too large to plug. Also, the puncture could be in a location that’s not safe to repair like in the sidewall or outer portion of the tread. So called run-flat tires should not be repaired because their design is such that internal damage can’t be detected by a visual inspection.
It is also important that repairs should only be done by a qualified tire specialist like the ones we have at Robert's Auto Repair. You can buy self repair kits – save those for emergencies, like when you’re off-roading and need a quick fix so you can hobble back to civilization and get professional help. If you need to use a repair-in-a-can product, remember it’s a temporary measure only and your tire needs to be properly repaired as soon as possible.
Here are some other considerations: Repairing a flat may void your tire manufacturer’s warranty – just something to keep in mind. Also, if you repair a speed rated tire, you should not use it in any motorsports or operate it above legal speed limits. Your tire professional will repair your tire whenever it’s safe to do so and he’ll advise you when it’s better to replace it. So watch those curbs and keep the air – on the inside.
Robert's Auto Repair
234 Ramona Ave, Monterey, California 93940
8313731534
Posted in the Tires and Wheels category
Keep Your Cool In Pacific Grove: Air Conditioning Service
Posted January 20, 2012 9:49 AM
Most Pacific Grove drivers wait for their air conditioning to fail before they service it at Robert's Auto Repair. That’s because many Monterey and Del Ray Oaks motorists don't really understand that automotive air conditioners need periodic service. Let me share some of the reasons why they fail.
First, like every machine, the SUV air conditioner parts need lubrication. The lubricant is actually mixed in with the refrigerant (that’s the stuff that makes the air cool). So sometimes, even though the air conditioner is still making cool air, the oil that lubricates the parts has just been used up: and unlubricated parts can fail in all California cars.
Now here’s a tip for Pacific Grove drivers: You should run your air conditioner every so often during California winters. This circulates the lubricant to help keep the seals from drying out.
The air conditioner actually removes some of the moisture in the air. So if you have trouble with fogging on your windshield during California winters or during a rain storm, running the A/C on the defrost setting should help. Now on some Pacific Grove cars you can’t run the A/C at the same time as the defroster. Don’t ask me why, but I suspect lawyers were involved.
Also, air and water can get into the A/C system. That can reduce the efficiency of the system and also lead to corrosion that causes damage. Pacific Grove drivers should periodically purge the system and replace the refrigerant to clear out the air and water.
Monterey drivers should be aware of early warning signs of trouble: One might be that the air’s not as cold as it used to be. You may hear an unusual noise when the A/C cycles on. Those are signs to get your vehicle into Robert's Auto Repair in Monterey before the damage gets worse.
So following the recommended service intervals in your SUV owner’s manual can help prevent mechanical failure of your air conditioning system. You’re A/C system contains some expensive components like the compressor, condenser, dryer, etc. Anything Pacific Grove and Del Ray Oaks car owners can do to lengthen the life of their A/C is well worth it.
Posted in the Air Conditioning category
Clean Fuel Makes a Happy Engine In Monterey California
Posted January 13, 2012 2:46 PM
If the fuel system in your SUV is dirty, you will be wasting gas and losing performance as you drive around Monterey California .
Unless you drive a vintage car, you have fuel injectors. They need to be properly maintained. That is why your owner’s manual has a schedule for cleaning your fuel injectors and other parts of your fuel system.
Your service technician at Robert's Auto Repair has the tools and chemicals to do the job right. Robert's Auto Repair uses a process that gives your car a deep, professional fuel system cleaning. The particles, gum and varnish that build up in your fuel system are removed so that it can run cleanly and efficiently.
After a professional fuel system cleaning, you’ll notice more power, better gas mileage and reduced exhaust emissions. AutoNetTV strongly recommends you follow your manufacturer’s fuel system cleaning service recommendations to keep your vehicle running strong.
It’s expensive to replace a fuel injector that’s been damaged by neglect. Check with your service technician at Robert's Auto Repair and see when your car is scheduled for a fuel system cleaning.
Posted in the Fuel System category
Fuel Saving Tip: Check Engine Light
Posted January 4, 2012 2:43 PM
A question for our Monterey California motorists: How long have you been enjoying the romantic glow of your check engine light?
Hey, it's not there to create ambiance; it's a warning that something's wrong. When your check engine light comes on get it checked at a capable Monterey California service station.
Many conditions that cause the check engine light to come on affect fuel economy. Some very dramatically.
Always make sure you tighten your gas cap until it clicks. A loose gas cap can cause a false sensor reading that'll make the check engine light come on.
If your date's eyes are smoldering in the reflected glow of the check engine light, try to think of all the gas money you'll save by getting it fixed. Give us a call when you are ready: 8313731534
Posted in the Fuel System category
Fuel Saving Tip: Gas Caps From Here To Del Ray Oaks
Posted December 29, 2011 12:24 PM
This fuel saving tip is so simple, no one from here to Del Ray Oaks will believe it. It has to do with your gas cap.
The first thing is to make sure it's screwed on tight. If it's loose, gas vapor will be constantly leaking out; wasted gas.
And air will get in and that can cause your oxygen sensor to read incorrectly and the oxygen sensor will tell the engine management computer to adjust the fuel-air mix and, well, you get the picture; you'll be burning more gas around Del Ray Oaks than you need to.
This could cause the check engine light to come on as well.
A worn gas cap can have the same effect. If you constantly smell gas when you walk by your tank, you might need a new gas cap.
So, twist your cap until it clicks three times – that means it's on tight. Have your Del Ray Oaks area service advisor at Robert's Auto Repair inspect the cap to see if it needs to be replaced.
See, I told you it was simple.
Don't forget to call Robert's Auto Repair at 8313731534 for an appointment to optimize your SUV for better fuel economy. Ask us about mechanical repair.
Posted in the Fuel System category
Tire Pressure Monitoring System
Posted December 20, 2011 11:35 AM
We all know that under inflated tires wear out more quickly. Under-inflation is also a major cause of tire failure. More flats, blow outs, skids and longer stopping distances are all results of under-inflated tires.
It's hard to tell when a radial tire is under-inflated. If your manufacturer recommends 35 pounds of pressure, your tire is considered significantly under inflated at 26 pounds. The tire may not look low until it gets below 20 pounds.
Uncle Sam to the rescue! A new federal law requires manufacturers to include a Tire Pressure Monitoring System - or TPMS system - in all vehicles by the 2008 model year.
Some 2006 and 2007 models already have TPMS. The system is a dashboard mounted warning light that goes off if one or more of the tires falls 25 % below the manufacturer's pressure recommendations.
The law covers all passenger cars, SUVs, mini vans and pick up trucks. The system must also indicate if it has a malfunction. This technology has been used by race cars for years. They are able to head off problems from under inflation by closely monitoring tire pressure on the track. It's up to your car's manufacturer to determine which of many TPMS systems available they'll use to comply with the law.
Obviously, all of this doesn't come free. Government studies have estimated the net costs. Of course, the TPMS system itself will cost something. Maintaining the system will have a cost, replacement of worn or broken parts and tire repair cost increases. The net cost is estimated to be between $27 and $100.
The costs are partially offset by savings in fuel and tread wear. There is also a saving in property damage and travel delay. Also, the government predicts fewer fatal accidents. They estimate there will be between $3,000,000 to $9,000,000 for every life saved.
Your safety has always been a concern of your service center. They want you on the road and accident free. They've traditionally provided things like tire rotations, snow tire mounting and flat fixes at a very low cost. They've been able to quickly and cheaply provide the service, and they pass the low cost on to you as an expression of their good will. That's why they're concerned about how you'll perceive the changes that this new law will force.
Every time a tire is changed: taken off to fix a flat, a new tire installed, or a snow tire mounted, the service technician is now going to have to deal with the TPMS system. Sensors will need to be removed and reinstalled. The sensors will have to be re-activated after the change. And, unfortunately, the very act of changing the tire will damage some sensor parts from time to time - it's inevitable and can't be avoided.
Even a simple tire rotation will require that the monitor be reprogrammed to the new location of each tire. When a car battery is disconnected, the TPMS system will need to be reprogrammed. TPMS sensor batteries will need to be changed and failed parts replaced.
And the service centers themselves will need to purchase new scanning equipment to work with the TPMS sensors and to update expensive tire change equipment to better service wheels equipped with the new monitoring systems.
Service technicians will have to be trained on many systems and new tire-changing techniques. All of this adds up to significantly increased cost to the service center to perform what was once a very inexpensive service for you. So when you start so see the cost of tire changes, flat repairs and rotations going up, please keep in mind that it's because of government mandated safety equipment. Your service center just wants to keep you safely on the road - and it's committed to do so at a fair price. The effects of the new law will take some time to sort out, but it will help you avoid the most common vehicle failure, and possibly a catastrophic accident.
Posted in the Tires and Wheels category
Timing Belt
Posted December 16, 2011 3:03 PM
Ever heard the sad tale of a staggering repair bill from a broken timing belt? Bad news. Let's take a lesson from their woes and remember to think about our timing belt.
First, let's review what a timing belt does. The top part of the engine, over the cylinders is called the cylinder head. The head contains the valves. There's at least one valve that lets the fresh air into the cylinder. This air, mixed with fuel, burns to create power. Then another valve or two open to allow the exhaust out of the engine. Each cylinder has 2 to 4 valves - that's 12 to 24 valves for a V-6, up to 32 values on a V-8. The opening and closing of the valves is done by a camshaft. The timing belt uses the rotation of the engine to drive the camshaft which opens and close the valves. It's called a timing belt because it has to be adjusted to rotate the camshaft to keep proper time with the engine so that everything's in sync.
The timing belt is a toothed rubber belt . But some cars use a timing chain or timing gears instead of a belt. Timing chains and gears are much more durable, but manufacturers are using belts more because they are quieter - and cheaper. If you have a small or mid-sized passenger car, crossover or mini-van, chances are you have a timing belt.
Unfortunately, timing belts fail without any warning. That shuts you down right away. A technician can inspect your timing belt and look for cracks and looseness. But getting to the belt to take a look can be almost as much work as changing it on some cars. That's why manufacturers recommend replacing the belt from time to time. For most vehicles it's from 60,000 to 90,000 miles or 95,000 to a 145,000 kilometers. If your owners' manual doesn't specify an interval ask your service advisor.
One AutoNetTV producer has had two timing belts fail. The first was while he was waiting at a stop light - that repair cost several thousand dollars. The second was while driving on the highway - that one cost more than twice as much. Both had the cars out in the shop for three weeks. His cars had what we call "interference engines", meaning that the valves and pistons are very close to each other. If the timing belt slips even one notch, the pistons will slam into the open valves. That's why our friend's highway failure was so much more expensive - his engine was traveling so fast that the valves were smashed and they chewed up the cylinder head.
A non-interference engine will just shut down if the timing belt breaks. You're stranded, but the engine doesn't suffer permanent damage. In both cases, our hapless friend was just a couple oil changes past the recommended interval for changing the timing belt. This is one of those things that you just cannot put off. Now replacing a timing belt is not cheap - but repairs for a broken belt can be many times as much.
Check your owners' manual right away - especially if you have more than a 60,000 miles or 95,000 kilometers. You may need to get that belt replaced right away. And on many cars, the timing belt drives the water pump. So, it may be a good idea to replace the water pump while you're at it because 90% of the work required for the new pump is already done with the belt change. Doing both at the same time saves you a lot of money because as they say, "timing's everything". Parts, Timing Belt
Posted in the Parts category
