Oil change interval
Post Fiend
Joined: Apr 2007
Posts: 5,398
Likes: 1
From: Gilbert, Az
I just switched to syn this last change. I am thinking of running it for around 5k before I change it, then going up to around 7k and getting an UOA to see how everything looks and how much longer they suggest I run it.
Lead Driver
Joined: May 2007
Posts: 5,613
Likes: 9
From: Flagstaff, Arizona
running Rotella T 5w-40 synthetic I change at 7000 miles. Blackstone tells me I can run 9000 miles, but I change it at 7000 anyways. For years I changed at 5000 miles running Rotella 15w-40 Dino, never did any analysis then.
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From: MI
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Lead Driver
Joined: May 2007
Posts: 5,613
Likes: 9
From: Flagstaff, Arizona
It's not out of the question, but I wouldn't just jump straight to 10,000. That's pushing it without analysis, working your way up to it.
Hotshot
Joined: Nov 2006
Posts: 11,286
Likes: 263
From: North of Greenville
Schaeffers 9000 5w40 synthetic, UOA's at middle and end of interval, 13,000-15,000 miles between changes with very good OA reports at the end of the run when I change the oil. I can probably go higher than 15,000, but I don't want to.
