Besides preventing the build-up of nasty engine sludge and premature wear, protection against cold starts is one of the main reasons why you should never skip an oil change in your gasoline or diesel ...

Add Yahoo as a preferred source to see more of our stories on Google. GRAND RAPIDS, Mich. (WOOD) — Many semi-trucks are powered by diesel, but the recent cold has not been kind to that type of fuel.

Diesel exhaust fluid is essential for keeping your engine functioning without letting off too many emissions. But it doesn't do well in the cold; here's why.