| Delo all the way, just to answer your question. Or another great dino 15w-40 that has the "CJ-4" API rating is made by Mobil. It costs the same as Delo. It's "Delvac Elilte" and "Delvac 1300 max."
If you don't want to spend the money on the full synthetics, why not try to extend your oil change intervals and go with Mobil Delvac 1300 or their semi synthetic "Delvac Elite."
As for me, you can see my Avitar picture. I use the Mobil DELVAC-1 full synthetic 5w-40. With oil analysis, I plan on going as farrrrrrrrrrrr as i can with the synthetic in my LMM.
I do know that the new CJ-4 rated oils that are mandatory in the LMM's are crap. The "TBN" number is lower than the older CI-Plus oil due to cleaner emissions stuff.
Oh well. I hope to get at least 25K miles before my next oil change with the synthetic Mobil Delvac stuff.
__________________ SCREW THE "ENVIRO-NAZIS!" DRILL FOR OIL, MAKE MORE DIESEL FUEL!!! 2008 2500HD DURAMAX/ALLISON Crew Cab / Z71 / 4X4 / Locking Rear Diffs / Dual Alternators
Mobil DELVAC-1 ESP 5w-40 Full Synthetic / Line-X Bedliner / Tow & Trailer kits
9,000lb Mile-Marker Winch / 33ft. 8,000lb. Travel Trailer / Arctic Bear Cat 4x4
2 Honda EU2000i Generators in Parallel / Yaesu 857d / Random Wire
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