Maybe this is old news however... when I purchased some Valvoline/Cummins Premium Blue 2000 (semi-synthetic) at Cummins NW (Renton, WA. ) yesterday, I discovered that along with the new label on the container, came a long awaited approval; the oil is now 100% approved for use in our Cummins B (and C) engines, as it now carries the appropriate API "S" rating. . in this case SJ. It carries the APIs newest "C" designation, CH-4 as well. As some of you may remember, the lack of the API "S" rating has always been a technical sticking point. Previously, the PB 2000 lacked the "S" rating, simply, because the oil was never submitted for testing. Don Carver, formerly, Chief Lubrication Engineer for Cummins, stated at the 1995 TDR Rally in Columbus, OH, that the oil would pass the current API "S" criteria IF the oil was submitted for testing, going on to say that it was OK for use in the "B" and "C" engines (the appropriate API "S" rating is necessary for proper lubrication of the "sliding cam tappets"). However, Cummins' official position was NOT in concurrence with Don Carver's statement regarding the use of PB 2000 in our engines.
It's funny, I still have an e-mail response from Cummins (dated 12-09-98) warning me that if I use PB 2000, "any failures determined to be caused by the oil, would not be considered (for warranty) by Dodge or Cummins. "
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'98. 5 2500 QC 4x4, (Black) SLT Sport, personalized license plate: BLCKOUT, ISB, LWB, 3. 54 LSD, A/T, Bosch 275 hp. injectors with Banks Stinger wastegate actuator, "Scotty Air System", Glasstite Vision II "canopy", Line-X bed liner, 285/75R16 BFG A/Ts on 16x8 M/T Challengers, Warn 4X Boards, Mopar fender flares, front and rear NW Custom stainless steel/rubber mud flaps, Mag-Hytec diff. cover and trans. pan, Edelbrock IAS shocks, Mopar tow hooks, Jordan Research Ultima 2020 trailer brake controller, VDO Vision gauges, PIAA Dual Sport 900 auxiliary lights and Super White bulbs, BD exhaust brake and TorqLoc, Prime-Loc fuel filter relocation kit, and Banks Stinger 4" dia. stainless steel exhaust system.
SVP of BOMB! heh,heh,heh