thought I'd post the results of using Schaeffer's 5x50 full synthetic. Here is the comment by the lab'

BRUCE: It's nice to see this Evo again. The oil was run longer, and this engine responded by producing
even fewer wear metals. In fact, this engine has a lower wear rate (ppm/mile) than universal averages - an
impressive (and not easily attainable) feat. We did find a bit of fuel, which is common in engines that see a
lot of city driving and/or idling, and in this case it was only a trace. The viscosity was much higher this time,
reading in the 15W/40 range. The higher viscosity may have worked in your favor, wear being what it was.
The best wear profile seen in a while.

This from one day's hard lapping, a thousand miles tuning and 3 thousand mile trip.

 

good post... I'll try schaeffers next

Ive been meaning to send my oil into blackstone labs but keep on putting it off...

 

815-674-7445

marksmith@mchsi.com

www.specializedlubricants.net

tell him I sent you, maybe I'll get a hat out of it.

 

motul competition oil.

 

I use Shell Rotella T synthetic. Its technically a deisel oil, but if you look at its composition, its exactly the same as a gasoline oil, but it has more sulfer and phosphorus. these two things are big-time anti-wear additives that have been all but completely taken out of gasoline oils for emissions reasons. Deisel oils are being regulated as well, so the levels of these additives are lower than oils used 10-15 years ago.