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Engine oil change when ?
When do you change oil if you have synthetic oil?
There is claims of mileage and some with age What is the consensus of fellow members?
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5 Replies
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There will be as many answers as members.
I use conventional oil, 5000 mile oil and filter changes because I have to get under the bus anyway to do a scheduled chassis lube. I use 5000 miles because It is easier to keep track of those intervals than 6250.
1999 XLV X-6872, liberty #440 -
10,000 miles, synthetic. Comes back fine from oil analysis.
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Used Oil Analysis, UOA. I use 3 different services. JB Lubricant Services, Oil Analyzers Inc. and Blackstone Labs. Do a search here on PC. Here are my latest 2 reports: LATEST REPORTS
And here’s a good article on “Assessing Oil Life”: ARTICLE
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10k non synthetic for years. Oil analysis always within specs. Some argue this mileage change point. Folks at Crete Trucking change at 40k miles.
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Prevost recommendations for my 8V92 was 10,000 miles or 12 months. I am not sure tif the series 60 is somewhat longer but I am sticking with that routine.
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