Amsoil vs Mobil 1 vs ULX-110
Dyno graphs were inconclusive - they varied just as much without the oil change.
The Amsoil hasn't been lab tested after being in the V8.
I have one sample of ULX-110 back, another is on the way. Results were within spec, but did contain the highest concentrations of wear metals I have ever recorded.
The local Mobil distributor sell drums of mineral oil to ULX where I live, ULX add stuff like Molybdenum and resell it.
8 samples back from the lab so far for my SC400 - intervals roughly average 3000 miles. All the oils have been ok.
See the all results and the dyno graphs here:
http://planetsoarer.com/OilAnalysis/OilAnalysis.htm
a buncha my friends are Amsoil distributors over here and they keep trying to move me over from Mobil- and I would have if the prices werent so damn expensive

cant wait to see the lab results




