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Jim Brierley · 07-04-2018, 11:23 AM

I agree with Terry about analysis. I don't recommend diesel oil, I run 20-50, any brand that's on sale. I ran an O-berg filter on my '82 GMC diesel, it has a washable screen inside. I changed oil every 4,000 and to my surprise the screen was always clean.

07-04-2018, 11:23 AM	#17
Jim Brierley Senior Member Join Date: Jun 2010 Location: Temecula, CA Posts: 4,107	Re: How many miles between oil changes? I agree with Terry about analysis. I don't recommend diesel oil, I run 20-50, any brand that's on sale. I ran an O-berg filter on my '82 GMC diesel, it has a washable screen inside. I changed oil every 4,000 and to my surprise the screen was always clean.