See this is my point...
Heres Amsoils data...
Heres Terrys data from
this link...
Volatility D5800/SAVLAB VOL %
ATM12.06
GC 11.28
M1 9.77
RL 6.85
And then a NOACK type test from
this link...
Chevron--25% loss
Havoline--28% loss
Citgo Supergard--29% loss
Castrol Syntec--15% loss
M-1 Super-Syn=16% loss
Royal Purple=17% loss
Napa Synthetic=13% loss
The above were SL 10w-30's
Amsoil 10w-30 syn "AMO-PAO type"--11% loss
GC 0w-30--16% loss
Kendall 5w-40 synthetic--23% loss
Mobil Long Life 0w-30 "Saab"--15% loss
Mobil 0w-30 Formula Extreme Trisynthetic--21%loss
Mobil 0w-40 Supersyn---16% loss
Fina ELF 0w-30 Synthetic--17% loss
Torco 5w-30 Synthetic--28% loss
Schaffer 10w-30 blend---25% loss
Synergyn 3w-30---21% loss
BMW HP Synthetic---15% loss
Motul 10w-40 E-Tech 100 Syn.--21% loss
Saab 5w-30 Syn Blend--24% loss
Torco 5w-20 Synthetic--26% loss
Synergyn 0w-20 Synthetic--14% loss
Auto RX--20% loss
Valvoline Synpower Oil Treat.--31% loss
Valvoline Maxlife Oil Treat.--29% loss
Schaeffer 132 Moly EP Treat.--20% loss
I believe the above test was done in the 200* area.
Id like to make an informed dicision based on the volatility of a particular oil...it does appear that Amsoil is the leader, but yet conflicts with newer data provided by Terry...or maybe Im just reading his data the wrong way???