If you drive a lot and put a lot of miles on your car, it seems like every time you turn around it’s time for an oil change again. Oil changes
start to seem like a nuisance when you’ve got to get them done every couple of months. Are they really that important?
The answer to that question is an unequivocal, unconditional yes.
The idea is to coat moving parts with a thin film of slippery oil to reduce friction, disperse heat and limit the internal parts’ exposure to oxidation. The combustion that goes on inside your engine’s cylinders generates a lot of carbon and other by-products, which eventually make their way into your motor oil. Over time, oil breaks down at the mole ...[more]