The new Rotella jug you saw may be the CJ-4 spec. Class 8 (18 wheelers) truck diesel engines manufactured on or after 01/01/07 need to run on Ultra Low Sulfur Diesel, (ULSD) at 15 ppm of sulfur. The pre-07 diesel spec - Low Sulfur Diesel [LSD], was 500 ppm of sulfur.
ULSD engines require an oil spec of
CJ-4 Will CJ-4 oil hurt a Triumph?
I don't really know, but I would lean heavily toward,
I doubt it. Shell mentioned that they are going to keep making the blue jug synth we know & love for a while. I don't recall how long, but it was (is?) on their site somewhere. There are still as you know, many pre-07 engines on the road, and many truck fleets pre-bought 06 engine trucks very aggressively to avoid the 07 engines in their tractor replacement cycles. In backlash, some of the major truck makers are now laying people off as a result of the lack of demand caused by the 07 engines.
http://portland.indymedia.org/en/2006/09/346126.shtml The 07 engines are calculated to add up to 16 to $20,000 to the life cycle costs of the vehicle. In the long run, ULSD is a good agenda for cleaning the air we breathe in that the engines burn almost without emissions, but in the mean time, it will hurt an industry plagued with bankruptcies ever since the deregulation of transportation industry rate structures.
(See also - airline bankruptcies since deregulation.)
