Originally Posted By: userfriendly
It is interesting Zeng, that you post your "guess" is that Delo 15w30 is not VII free, but Amsoil 15W40 "is" VII free.
That sounds like bias reporting to me.
Look at the following figures and evaluate:-
a)VI 111 for Delo 400 SAE30 monograde; and
b)VI 128 for Delo 400 SAE 15W30 (mono or multi?)grade; and
c)VI 141 for Delo 400 XLE Synblend 10W30.(This Synblend does NOT claim shear-stability)
Thus my 'guess' on 15W30 (obviously not Synblend, right?) is not VII-free.
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d)VI 146 for Amsoil 15W40 ............. where Amsoil claims as "Premium 15W-40 Synthetic Diesel Oil with Superior Shear Stability and Extended Drain Intervals ....... "
Hence ...........