Forum Discussion
rhagfo
Aug 20, 2017Explorer III
rjstractor wrote:larry barnhart wrote:
I sent a sample to Blackstone from our duramax with 11000 miles on the rotella synthetic and the report said try for 13000 next time. Not going to happen but good to hear the report on the engine.
Why not go 13000 when you have good data that indicates it's good for that mileage?
Not a newer Cummins, but when I sent a sample with 10K on it to Blackstone they said I could likely go 12,500 miles, 10K works for me, but nice to know the oil still has the necessary additives.
About Travel Trailer Group
44,052 PostsLatest Activity: Oct 12, 2025