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Q: How is it that my brake rotors are worn out. Don't they last forever? A: Brake rotors are a part of
a total system. Depending on what type of vehicle you have, they might last 100,000 miles with machining, or they might only
go 25,000. Driving style also plays a part in rotor life as well. Some manufacturers use very soft rotors to ensure perfect
feel/lack of noise through the operating life of the system, however this eats into longevity. Q: I have seen
places advertise 100% nitrogen to fill my tires. Is it really worth the money? A: The air in earth's atmosphere
is 78.082% nitrogen by volume. Normal cars and truck do not need this procedure as a performance or safety concern. BMW has
issued corporate bulletin #36 04 06 outlining why it isn't needed.
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Q: I remember in the old days, engine oil was replaced at 3 months/3000 miles. Should I still go by this measure? A:
There is an immense amount of information and a little bit of debate about this topic. Some manufacturers' such as Mercedes-Benz,
BMW, and Porsche recommend as long as 18,000 miles on a service interval. It really boils down to your driving habits, and
what type of oil (synthetic vs. organic ). We recommend from 4,000 to 6,000 miles on organic oil and 5,000 to 8,000 miles
on synthetic oil. Or once a year if your mileage is very low. Q: I saw an ad for "engine oil flushing"
and wondered if my vehicle could benefit? A: Engine "flushing" as it is called forces a light solvent
through the oil circuit in your engine. This procedure is supposed to remove unwanted carbon and other "debris"
from the circuit. This has the potential to do more harm than good. GM has issued corporate bulletin #02-06-01-028 to address
it's stance against the procedure.
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Q: Why do I need to replace my timing belt? Also, another shop said I didn't need any pulleys or tensioner. A:
A timing belt has a mileage based lifespan ( in some instances this can be time based ). It is a critical component of your
engine. In a majority of vehicles, if it were to break, catastrophic engine damage will result. It is also part of a system
that will include various idler pulleys, tensioner devices, and ( some models ) a water-pump. Replacing everything at the
same time results in a totally brand new system. If a partial repair is made, the same amount of labor would apply to go back
and replace other parts, resulting in additional downtime and cost to the owner.
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