My engine builder recommended using a lighter grade of oil + EOS for my Flat tappet 235 run-in. After 300 miles he recommended a switch to a CL,CL-4+ oil. Our operating temperatures down here are a bit more extreme, so I started hunting for this API rated oil in a straight weight. Couldn't find any...even discovered that Rotella T can be found, that is rated lower. Gotta watch the API stickers or you'll wind up using sl or sm stuff.

Guess it's like the "flat tappet situation"....less demand, fewer manufacturers, fewer choices, more money for the quality stuff.

The Cl,Cl-4+ Rotella was $5.00/quart in 2 gallon jugs, the Delo400 with a CJ-4 was $2.70/qt in gallon jugs so it looks like Delo with a bottle of EOS would economically, be a feasible choice. Will run an oil analysis ($9.00)at 1300 miles and see if my theory works.

Dave


http://community.webshots.com/user/Fla54Chevy3100 "What this generation tolerates, the next will embrace"