Hi, I have an 82 280E Mercedes. According to the Specs listed on the GC bottle it meets spec called out for my Mercedes. But in my Owners Manual it says I should use a 20W-40 or 20W-50 oil for my climate 0*C +up. I use the GC in my Mazda Miata and the engine loves it (nice and quite HLAs). I was thinking of using the Shell Rotella Synthetic, but if anyone has good luck with GC in their Mercedes let me know. I don't want to have low oil pressure in the MB due to the oil. I put the Mobil 1 0W-40? in an older VW Golf I had and it was supposedly a "Euro Car" formula at the time, but the motor couldn't build enough oil pressure to pump up the lifters at all.