I think this is an important point - oilman, put us right if not pls - it is wrong to say that Castrol RS is crap, it isn't IMO, as proven by the many that use it in pretty adverse circumstances, BUT there is better quality out there... it's only 'better' though if you actually need 'better' for the application and get benefit from it.

The most important thing is to be making an informed choice for your own individual case, after understanding the facts. There is so much bollox spouted by so many people who actually know nothing, and choices are being made on folklore and pubtalk alone..