Drain intervals
Just went back to Amsoil on my newest diesel.
On my previous diesels (Cummins) I changed filter every 3000 miles, oil at 6000.
Course, I used severe service intervals since I did a lot of short trips with the vehicle.
I suppose if I had been doing more over the road type driving, I would have stretched out the changes to 5000 and 10000.
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