Posts by jackdoherty

Your engine is made of metal and contains metal parts. Those metal parts move. To keep the moving parts from destroying themselves through physical contact with each other, engines are designed to distribute a thin film of lubricant across the surfaces where metal would meet metal. The lubricant is oil. Oil is the life blood of your car’s engine. Without it, internal movement of engine parts would create excessive heat and friction. Metal parts would expand and warp and dig into each other, quickly causing the engine to fail. Automotive motor oil forms a thin barrier between metal parts allowing them to slip past each other without touching. Modern oils contain additives. These additives include rust and corrosion inhibitors, detergents, oxidation inhibitors,...