Quote:
Originally Posted by tcora
Yes, you certainly don't want your oil to become contaminated with ... oil?
5k mile change intervals for a car which has a 10qt sump and runs Mobil 1 is significant overkill. Pull an oil sample and send it to Blackstone if you are worried about contaminants, low TBNs, etc etc.
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I don't know how your drove your air-cooled Porsche but for me 5,000 miles would have been 50% in the 2-3k RPM range, 50% in the 4-6k RPM range. You bet I'm changing it every 5k with the best I can get. SWEPCO or Brad Penn, with regular topping-off every month.
These cars aren't your grandmother's Chrysler.