The first step in any repair job, especially to engines, transmissions and other traditionally oily components, is to clean away all the accumulated grease and gunk. Oil and grease, baked by engine or ...

Harvard's oil recycling system, installed on this Caterpillar 980G loader, cleans the used oil so it can be reused in the engine. Both engine and hydraulic filters, shown here on a mixer, keep ...

We earn commissions from purchases you make using links in our articles. Learn more. Most drivers know that regular oil changes are necessary to maintain the life and performance of their vehicle. For ...

So your daily driver hot rod has an engine that runs good but looks like a horror-film reject. What do you do? Well, you could bolt the hood shut and drive the beast until it dies, or you could spend ...