Originally Posted by gpshumway
It looks to me like Amsoil is confirming Dennis' and my suspicions that Blackstone swapped your sample. I would treat the 13,700 mi UOA as what to typically expect from Amsoil Euro 5w30 in your application, and treat the 17,700 mi sample as lab error.
Too bad you won't be running the Euro 5w30 any more, it would have been nice to see some trending with it. Maybe I'll switch to it from Redline just for kicks (probably not). We'll see how the full-SAPS 5w40 looks, I'll bet it performs well, but no better than cheaper, easier to get RT6.
I get a ~20% off discount from AMSOIL as my buddy is a distributor. Also, the Full SAPS stuff is $38.80 for 5L before the discount. It's not too expensive.
5L AMSOIL = $38.80
1 Gal T6 = $21.00
It ends up being very close when you add my discount and equal out the amount of oil. We'll have to wait and see. I've got another 2,200-ish miles to go until I hit 5k on this oil.