Originally Posted by LUVMBDiesels

I usually do 4000 on the oil (Rotella syn 5W40) and 2000 on the filter. I am being bad now down in D.C. and have gone 5000 on the oil and 3000 on the last filter. I am doing a change this weekend for sure!

BTW, I get my oil at Tractor Supply CO. That is the only place near me that carries any diesel oil much less synthetic. I wish I could switch from Rotella to M1, but I can't find it...