Quote:
Originally Posted by M.D. Holloway
Oil analysis is cheap - offered at NAPA and CARQUEST. Oils these days are pretty well formulated and the different between synthetic and mineral based isn't going to be all that noticeable on a daily driver. I know a very good mechanic that uses used oil he drains from other cars in his cars. he thinks people change oil way too soon. I have access to tons of data and I agree. I went 43,000 miles on the same oil without a filter or oil change. Yes, I sweetened it due to pulling 4 oz samples every 3000 miles.
I have tons of documentation that diesel engine will go 40 to 50K between changes. Granted, a different engine and fuel but I shows just how far oil formulas have come.
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Good to know,, since you ARE the expert.. I have a question.. what about the time between oil changes if the car is a garage queen just sitting there.. Does oil age ? I mean it's already million of years old right ?
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"Todd"
98 Tahoe ,2007 Saturn Vue
86 930 black and stock, 80 930 blue tracdog
91 Spec Miata (yeah I race a chick car)
"life"ll kill ya" Warren Zevon
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