First off onus is on him for making the statement. Not me. It’s equivalent to me being in a debate and making a statement and not backing it up with factual information.Look at the ratings on the oil.
I already knew the ratings given. Both oils have MB 229.5 and 229.3, both oils have A40, and at this time none have the LL01 rating (Per Canadian websites). API and ACEA ratings are the same to.
What M1 has and Castrol doesn’t is the Nissan Performance rating. Not sure what tests they undertake but it’s the rating for their GTR engine. Both are good oils and UAOs show that but to say one is better then the other without providing solid info and facts? Ridiculous.
So I’ll ask again, elaborate. If he can’t do it and neither can you, then both of you better stop making such statements or back them up. As Joe Biden says “C’mon man”.