Bailes1992
Thread starter
They have some interesting oil additives however, like the Mannol Ceramo Ester, comes in a 250 or 300ml can and it really is Ester plus a good shot of Moly and Zinc , have seen UOAs done with it and yes it does appear to work, i think the whole can treats up to 5L of oil.
I used it in my 'old' '21 Insignia with a 3 cylinder diesel that was rough as a badgers a*se from the day it left the factory and I think I noticed some improvement but I'm always very quick to pass everything off as a placebo. Maybe trying it in the Volvo with 150k+ on the clock would be a good test.