AUDI OIL

Coolant mix­ing with en­gine oil is a sign of a se­ri­ous prob­lem, of­ten caused by a blown head gas­ket, or a failed en­gine oil cooler. When these com­po­nents fail, they al­low...

A car en­gine uses mo­tor oil to lu­bri­cate the in­ter­nal mov­ing parts of the en­gine such as crank­shaft, rod bear­ings, pis­tons and valve train. This oil is con­trolled from...