I just tried some Mobile Delvac 15w40 and I like it much better than the Rotella 5w40 syn I had been using. It is dino and didn't list any "Resource Conserving" (the new label for what used to be Energy Conserving). The clutch squeal was much better and, when hot, would still start in gear. I don't think anyone leaves it in long enough to need syn anyways. Its also really cheap (even cheaper than house brand, less than $10/gallon) and at Wallys place. It is a diesel oil and it was cheaper than dino Rotella.
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2006 EC300, 2000 XR650R, 2003 EC250, 2001 EC200 (OK, the last two are really my sons).
Last edited by kendunn; 02-03-2011 at 08:57 PM.
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