Join Date: Oct 2001
Location: Momence, IL 60954
I did on a 2.3L type 4, but granted I was running pauter roller rockers, which are notorious for not oiling the valvetrain on street (low rpm) engines - I was running Royal Purple at the time. On disassembly, the engine was worse for wear, especially the bearings. About the only thing that looked good were the cylinders, which went onto another engine. I did loose a piston from the valve going through it though.. There must have been alot of crap floating about from the guides wearing prematurely to have killed the engine in less than 3000 mi. I have also seen more than one engine running RP (granted they were very high strung engines) with high wear metals.
In RP's defense, on another engine I do have to admit that the RP did maintain a high TBN and anti-wear additive levels after sustained high oil temperatures over thousands of miles (stock oil cooler was bypassing, causing oil temperatures to sit between 210-240F, depending on the temperature out).
Charles Navarro, LN Engineering
Aircooled Precision Performance
'99 Boxster powered by Flat 6 Innovations; '10 Cayman S (DFI testbed)