which cummings wmo

argve

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I would say any of the mechanical injection ones would probably be best.

1st gen 1989-1993
2nd gen 1994-1998 (early 98 models)

As the 1998 model year is a change over year - the first half got 12v engines and the latter half got the 24v engine.

I remember reading on Cummins website that you could run up to 5% waste motor oil with out any problems - that was their statement. Now we all know that you could get away with more because they will rate it much lower than it could really handle because of liability issues that might arise.
 

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