hey hey people
i have an opel astra k 1.6 litre CDTI (B16DTH GM diesel engine). opel tells me the engine oil specs as follows: 5w-30 and dexos®2 certified.
as of now i have Motul 8100 X-clean EFE
in the sump. thinking of trying Shell Helix Ultra Professional AG
since i am due an oil change soon.
would you say one is better than the other? (they seem really close. then again, i don't know much about oils)
(left: motul | right: shell)