Originally Posted by cadillackid
I use the NAPA filters on my 444E and Rotella T standard 15W40 oil...
mine uses just about 20 quarts. that includes the oil going into the filters..
I believe the recommended interval is 350 engine hours or 8000 miles whichever comes first.. I go 6000 (i'll never come close to the hours as I run the busses up and down the highway lots)..
always pre-fill your oil filters so you dont risk running the HPOP dry and stalling the engine when changing oil in a 444E.
Thanks, that's helpful. I've heard that synthetic oil is preferred? Maybe that's just for stop/go drivers...
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