I don't know what weight oil the new MB are using, but today I saw a new Mercury Marquis, w/a V-8 engine, that called for 5W-20. Why not just use WD-40. Is it suddenly "how low can you go" with oil weights. Where in the hell do buy 5W-20.
1994 MB E320 Coupe (199,500 mi)
1992 MB 190E 2.6 (173,000 mi)
1983 Porsche 911SC (148,000 mi)
2004 Volvo V70 2.5T (198,000 mi)
President of CT/Westchester Section