My customers have been asking for more information on synthetic oil and how it affects their engine. Basically the inside of your engine gets really hot because of friction from the moving parts and from burning fuel. Oil lubricates the moving parts to keep them from getting too hot.
The problem comes when oil turns to sludge, which is kind of a thick jelly. Sludge clogs up little passages so that the oil can’t protect parts of the engine. So the two best ways for auto owners to prevent sludge build-up is to always change their oil on schedule; and to use synthetic oil.