what is the best engine oil , for a k11?
At present I use gm(vauxhall) 10w40 semi synthetic oil , the bloke at the local factors recomended me this oil (£11.99 for 5 litres)
Well its when there is so much difference between 20K miles from one driver to another. For example give somone like Arnold (haha) a car with a 20K service intervall it will probably expolode, give the same car to somone sensible.. hmm cant think of anyone sensible here, and it would be ok. at least 10K gives a margin for error![]()
agreed with above GTX has worked well for me too.
I use GTX Magnatec 10W40, always works well for me![]()
vauxhall oil lasts the 20k servicing schedule so its probably better than most other oils