AUTONET TV

Proper Fluids for Your Vehicle

We would like to give you an update on some of the things happening in automotive fluids. You know, cars are becoming more sophisticated everyday - and fluids such as, oil, coolant and transmission fluid are becoming more specialized at about the same pace.

The do-it-yourselfer has to be pretty careful so that they do not actually harm their vehicle with the wrong type of fluid. That is why so many Maryland car owners rely on the advice of their service consultant to not only get the correct family of fluids, but to suggest the formulation that is best for their car and the way they drive.

Let's start with engine oil. If you have been paying attention, you will have noticed a number of new oil weights on the scene in the last several years. Modern engines are built to much tighter tolerances and have very complicated valve trains. The oil must be thin enough to lubricate complicated parts when the engine is cold. The weight of an oil is expressed in terms like 20-W-50 or 5-W-30. Manufacturers recommend the weight of oil for each vehicle they make. The recommendation is based on engine design. Your Bushwood service center will know what weight your manufacturer recommends - and it's important to follow those recommendations. A service adviser at Hill's Auto Repair can also offer suggestions for special formulations and can explain conventional and synthetic oils.

Antifreeze, or engine coolant, is another area that has become more complicated. For a long time, manufacturers only called for a couple of different types of coolant. Now there are several different formulations that are needed because of the different materials that manufacturers are using to build the cooling system. Using the wrong type of coolant can actually void your warranty, so you want to get that right.

Transmission fluid is beginning to be specialized as well. New transmission designs have particular requirements that mandate the use of specific formulations. Recently, new, somewhat confusing, standards for brake fluid have also been released.

Not too long ago, there was a good chance that all of the vehicles at your house would use many of the same fluids. However, as automotive technology advances, the array of basic automotive fluids you need will grow. And, some of the formulations will cost a little more. Fortunately, your Leonardtown service center will continue to update their training to keep pace with technology so that you'll get the right fluids your car needs. It's all part of the commitment your service center makes to your driving peace of mind.

Differential Service

When you take a corner in your car, the outside wheels have a slightly longer distance to go than the inside wheels.  That means that the outside wheels must turn a bit faster than the inside.  The piece of mechanical wizardry that makes this possible is called the differential.

The differential allows the drive wheels to rotate at different speeds in turns without the wheels binding or hopping.  If you have a rear-wheel drive vehicle, the differential is on the rear axle.  You’ve seen that bulge in the middle of the axle when you’re behind a truck – that’s the differential.

If you have a front-wheel drive vehicle, the differential function is handled by your transaxle.  Of course, all-wheel drive vehicles have differentials on both axles.  They also have a center differential or a transfer case between the front and rear axles to compensate for speed differences between the front and rear.

Because all the power of the engine is transferred through the various differentials, you can imagine that they are very strong and are built last a long time.  That’s why it’s important to keep your differential properly lubricated.  Differential fluid cools and protects the gears.

Your service technician will check differential fluid level and top it off if necessary.  With low fluid, the differential will run too hot and wear prematurely.  Ask your service advisor for when it’s recommended to change your differential fluid.  Fresh fluid will extend the life of your differential.  Your technician will also inspect the u-joints which connect your drive shaft to the differential and may recommend service.  Some u-joints can be lubricated as part of a routine lube, oil and filter change as well.

Now, of course differentials eventually wear out and need to be replaced.  You might notice a strange noise from your axle area as one of the first warning signs.  When the differential shows signs of failing, it’s important to repair it.  If you leave it too long and it freezes up when you’re driving you could lose control of your vehicle and other parts like the axle, driveshaft and transmission could be damaged.

Give us a call

Hill's Auto Repair, Inc.
22829 colton point rd
Bushwood, Maryland 20618
301-769-2400

Vehicle Warranties

If you own a Maryland vehicle with a warranty, beware! Many dealers and manufacturers suggest that you need to get your maintenance services at a dealership in order to keep your warranty. That simply isn't true! You can have your vehicle serviced at your trusted, local service center without affecting your warranty. A federal law, called the Magnuson-Moss Warranty Act, prohibits a manufacturer from voiding your warranty just because you got parts or services from a non-dealer. In fact, a manufacturer can't require you to use their brand of oil filters, lubricant, or any other part in order to maintain your warranty protection. This protection is true for aftermarket extended warranties purchased on new or used vehicles. This protection also applies to leased vehicles. There are similar laws in Canada as well.

If a manufacturer can prove that the replacement parts or service lead to a vehicle failure, they can void a portion of the warranty. Of course, Hill's Auto Repair uses quality parts and fluids that meet or exceed manufacturers' specifications. (See hillsauto@verizon.net.) A lot of people do not know that service centers subscribe to data services that tell them exactly which parts and fluids meet manufacturers' specifications. These services are updated constantly so that your Leonardtown automotive service center always knows what you need for your car. You can be assured that your vehicle will receive high quality replacement parts that'll keep you safely on the road.

Proper maintenance is so important to safety. It can also prevent costly repairs and save you money over the long haul. Just because you don't have to go to a dealer to get your maintenance service performed doesn't mean that you don't need to have it done at all. In fact, some protections from your warranty require that scheduled maintenance be performed. If you miss having important work done, you may lose some warranty coverage. Refer to your owners' manual and vehicle warranty for more details. And keep good records of the work you've had done.

The protection you receive under the Magnuson-Moss Warranty Act can save you hundreds of dollars each year. The average hourly labor rate for service is nearly twenty percent lower at independent service centers such as Hill's Auto Repair. We are conveniently located at 22829 Colton Point rd in Bushwood. So why go anywhere else?