Quote Originally Posted by tuazon7 View Post
Hi Doc, currently using Royal Purple 15W-40 paired with BD28. Performance is good but still looking for alternatives. Plan to use Fleetguard LF3564 next but still undecided on the oil. Which is comparable or better than RP? Mobil 1 TDT, Mobil Delvac MX or Motul (?)...TIA.
Well if you find a real LF3564 let everyone know were you got it, remember no country of origin it's a fake. The LF3564 is also now being made in Argentina as well. Mobil1 TD has a much better additive package over RP.

In a Turbo diesel it's all about the oil with the most Zinc, Phosp, Moly and Boron and Calcium and who has the highest TBN, all will give you longer oil life.

Mobil1 0-40



Royal Purple 0-40