Factory spec was 10w140 in cold climates and 20w50 in warmer climates if I recall, I know mine hates the new light oil get noisy. I use Rotella T6 price is right and the viscosity is available in it. __________________ Dave - PDX 1995 318ti - Active Black and Tan. 2005 330xi - Mtech 1 - 6spd - Orient Blue/Black |