Quote:
Originally Posted by bmwpowere36m3
Delo oil is okay, better oil is Shell Rotella Synthetic T 5W-40, Rotella T Triple Protection 15W-40 (dino) or Mobil Delvac 1 5W-40 (Synthetic), Turbo Diesel Truck (newer version of Truck & SUV) 5W-40 (Synthetic), or Delvac 1300 15W-40 (dino).
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Based upon what? new rotella formulations have come out recently and time will tell, but the shell oils have been quite plain for a long while now. The RTS 5w-40 is a stout oil that offers good results, but the additive chemistry just isnt to my liking overall with rotella.
Delvac 1300, which ive used, is another ordinary oil. D1 is a stout, robust performer, the best of the pack, and the oil to beat.
In 617 engines, I found best MPGs with D1, worst with Delo 400. Everything else was inbetween. however, delo has friction modifiers, that dose of moly is nice. Delo is a good oil, and chevron evenhad a nice paper to the SAE showing delo 400 performance and economy versus D1 in a fleet of OTR trucks. I think it is from a number of years back, but delo has only improved.
Rotella now has a 10w-40 blend which may be of interest. We will have to see what the add packs look like for the new rotella series.
Id be buying delo 400, rotella syn, or Delvac 1 (aka M1 turbo diesel truck) as my oils of choice...