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80 percent of my driving falls under severe driving conditions.
Either I am making short trips or hauling or towing heavy loads.
I change mine at 3000 miles with either dino or synthetic.
Soot levels do not change because of the type of oil you use.
And I also use the Fleetguard LF 3630 two quart oil filter. (PS type filter)
Last edited by Dave Sponaugle; Mar 28, 2005 at 09:29 PM.
2500-3000 miles, but I dont drive it much so I will probably average no more than 2 oil changes a year. I use Rotella 5w-40 Synthetic Oil and a FL1995 filter