I'm a "facts and figures" kinda guy. If you make a claim, you'd better be able to PROVE it to me...or I think you're just "puffing", shall we say.
Let me fist say that I like Castrol Edge and I use Castrol Edge oil in all three of my cars (and truck). Having said that, they make a claim on their website that I want to VERIFY which says, "Independent testing has proven EDGE Extended Performance stronger than Mobil 1 Extended Performance against viscosity breakdown – the ultimate test of strength." and "Castrol EDGE Extended Performance 5W-30 was proven stronger against viscosity breakdown based on ASTM 6278 and CEC-L-14 independent testing." Source: http://www.castrol.com/en_us/united-stat...-motor-oil.html
I think Mobil 1 Extended Performance is a great oil as well, and if you're gonna have the onions to bash this oil on your website, you'd better be able to back up your trash talk, don't you think?
I called Customer Support who said they (Customer Support) do not have a copy of these referenced, independent test results behind these claims. They further told me BP may not be willing to provide such test results to the public, to which I replied..."Then why should we, as consumers, believe the claims that you're making about the performance of your oils are even real and not completely fabricated..."?
Crickets...nothin' but crickets.
I've started to e-mail one of 88 different e-mail addresses that I have for Castrol. Stay tuned...same time...same Bat channel...
Ed