AUTONET TV

Some New Boots (Suspension Maintenance)

There are some boots that don't come in a shoe box and aren't worn on your feet.  They are called axle or CV boots, and they can be important parts for many vehicles.

That CV stands for constant velocity.  CV axles are mainly used in front-wheel drive and all-wheel drive vehicles. They're also used in some rear-wheel drive vehicles with independent suspensions.  They have two CV joints, one inner and one outer, placed between the axle and the drive wheels.  That way the vehicle's engine power can drive the wheels, no matter what angle they are.  They also adjust for the different speeds wheels turn as they go around corners. 

Because roads are full of all sorts of hazards (dirt, oil, water, grime), these CV joints need to be protected.  They also have grease in them to keep the bearings moving smoothly.  That's the job of the rubber boots that are supposed to keep that debris out.  These CV or axle boots are made of rubber or plastic and usually last a long time without any problem.  But sometimes they fail, either from being hit by debris or age causing the rubber or plastic to deteriorate.  That can allow the grease to leak out of the joint and the moisture to get in.  And that's where the trouble is.

So it's important to have a vehicle's CV boots checked periodically, especially when they begin to have more than 100,000 miles/160,000 kilometers on them.  A technician inspects them for tears or cracks.  Sometimes if the problems are found early enough, the boots can be replaced and the joints can be re-packed with grease. 

But sometimes the CV joint can wear out even though the boot is intact.  When the CV joint fails, you might hear a grinding, humming or clicking noise and feel vibration.

Some of these can be difficult to access for service, so many service advisors will recommend replacing the joints and boots at the same time.  Just remember, new CV boots won't make a fashion statement, but they will keep your vehicle going down the road for years to come.

L and M Motors Inc
400 W 53rd Ave
Anchorage, AK 99518
907-563-4994

Conventional or Synthetic? (Switching to Synthetic Oil)

If you keep up on technology trends, then you may be intrigued about synthetic motor oil.  It was introduced in the 1960s when Mobil came up with it.  Mobil's oil was different from conventional motor oil because it was first broken down to its basic molecules.  Then, Mobil removed additional impurities from crude oil and "tailored them to the demands of modern engines."

Synthetic oil is becoming more popular now because of its advantages over conventional oil. It's more resistant to sludge forming in an engine.  It is more efficient and protects engines better under temperature extremes.  Because it allows drivers to go longer between oil changes, many feel it's more convenient. 

The downside is that synthetic oil is more expensive, but because it doesn't need changing as often, the cost can be pretty comparable in the long run.

Those who drive high performance vehicles (think Audi, BMW, Mercedes) are already using synthetic oil if they're following their manufacturer's guidelines.  Other manufacturers recommend a synthetic blend.  So for those who are using conventional oil, you may want to consult your service advisor for some recommendations if you want to switch to synthetic. 

If you're the type who always waits until the last-minute or doesn't ever get in quite in time for the recommended oil change interval, the longer gap required between changes with synthetic oil may appeal to you.  In some cases, you can go up to 15,000 miles/24,000 km between changes. 

If you drive in a very cold climate, synthetic oil can flow more easily at startup and may offer quicker engine protection.  On the other hand, in hot climates, synthetic oil can resist heat breakdown better.

Or you may be one of those drivers who have been getting along fine with conventional oil changes.  Millions do.  Just remember that changing your oil is considered the most important maintenance you can do on your vehicle, so make sure it's done at the right time and with the oil that best suits your driving needs.

L and M Motors Inc
400 W 53rd Ave
Anchorage, AK 99518
907-563-4994

Sounds Like a Hot Rod (Noisy Exhaust System)

Driving along, your exhaust system's rumbling so loud that people turn and stare at you pass by.  You're wondering when the police are going to pull you over for illegal noise.

Your mind immediately thinks, aha! A broken muffler. 

Well, your exhaust system is composed of many more parts than just a muffler. 

Your engine makes power because of thousands of tiny explosions from detonating fuel.  Those explosions make a racket, so engineers came up with a system that acoustically dampens that sound in addition to getting rid of harmful exhaust.

In the engine is the exhaust manifold that looks like several pipes that join up into one pipe.  It directs exhaust to the catalytic converter. The catalytic converter converts harmful gases into less harmful gases using certain chemical reactions.  Then comes the muffler that has baffles inside to quiet the sounds of your engine noise.  Finally: the tailpipe.

All of those pipes and parts are joined together by clamps and held up by brackets, and they ride over some pretty bumpy roads.  They are also exposed to the elements, like salt, water, rocks and grit.  Chances are that one of those clamps or brackets has been weakened by corrosion.  When you hit a bump, bingo! The crack widens into a gap and there's a spot for the engine noise to come roaring out instead of being directed into the muffler's quieting chambers.

You might be surprised to know that the exhaust system can rust from inside out.  How? Moisture is one component of exhaust, and moisture on the inside can do the same kind of damage as moisture from the outside. 

It's a good idea to have your exhaust system looked at regularly by a technician.  He or she can evaluate the condition of the metal and recommend when it might be time to replace parts before they break.

Then you'll have a decision to make.  Newer exhaust systems are made out of stainless steel that is much less prone to corrosion issues.  Others are made of aluminized steel that also fights rust.  You've probably already guessed that they can cost more, but the extra price up front may give you an exhaust system that will last much longer. 

Sure, with a repaired exhaust system, you won't have quite the head-turning vehicle you once had.  You'll just have to live with all the quiet.

L and M Motors Inc
400 W 53rd Ave
Anchorage, AK 99518
907-563-4994

The Cable Guy (Battery Cables and Maintenance)

If you've ever noticed your vehicle's lights are dim or not working at all, the problem could be many things.  But one possibility is your battery cables aren't doing their job.  A power outage in your vehicle is similar to one in your house and needs to be repaired to get things back to normal.

Battery cables connect your vehicle's battery to the vehicle itself.  There is a positive cable when provides the power and a negative cable that connects to the vehicle chassis and provides a ground for electrical components. 

A failing battery cable may cause your vehicle not to start.  Your starter may turn over very slowly.  Or you may just hear a series of clicks.  One other clue is on your dash—the battery warning light. 

There are many things that can cause power issues in a vehicle, but it's important to keep battery cables clean and maintained.  Salt and corrosion are enemies to any power system.  A technician can keep things in top shape, disconnecting the cables, inspecting them and cleaning their ends and the battery terminals.  Cables, by the way, are often made up of smaller strands of wire.  If they are frayed, some of those smaller wires can touch metal parts of the vehicles that they shouldn't.  The result? Electrical system malfunctions.

So if you see any of these signs that something is not quite right with the power in your vehicle, consult your service advisor and get it checked out.  Feel the power!

L and M Motors Inc
400 W 53rd Ave
Anchorage, AK 99518
907-563-4994