I think you missed the point, I sell Mobil1 and it's a good oil, never said otherwise because it is.

The post above is about synthetic myths, this could apply to Mobil1, Castrol, Silkolene or whatever, it just explains why some of the rubbish spouted about synthetic oils is untrue.

As for why oils I recommend are better, it's down to chemistry/makeup and quality basestocks..................if you want proof that they are any good, why not ask the people here that use them? Surely they are the best people to judge

Besides, where have I said that your engine will fail if you don't use synthetics.................I haven't!

What I have said is that they give better protection.

Cheers
Simon