Amsoil sent some oil (RD-50, 15w/50 Racing Oil) to Ilmor Racing Engines. They have only endorsed Mobil 1 for their racing engines.
Amsoil challenged them (Ilmor). The engineers at Ilmor were amazed! They had not seen oil like this or experienced oil like this. It was superior to the Mobil 1 in which they had been accustomed to. In their testing they could not scuff any bearings in any way or fashion. They claimed they were going to start telling customers to use Amsoil Dominator Synthetic Racing Oils.
The next day or so, things changed. It appears Roger Penske is a spokesperson for Exxon-Mobil and they were told the only oil they would be endorsing is Mobil 1.
Politics at play! I only hope the good ole' boys out the back door tell some customers about the good stuff!
Gee Roger, maybe you can endorse Amsoil.............after all it comes from Mobil-Exxon PAO Basestock! There the similarity ends!
I recently sold Amsoil Synthetic Water Resistant Grease to the U.S. Coast Guard. My feedback was a call telling me their bearing maintenance for submerged bearings was lengthened 5 times over the previous product that was being used. They tell me it will not wash-out!