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I am sure a lot of the readers and users of this site are DIY mechanics, priding in the good upkeep of their cars, which may also include frequent oil changes, enabling great gas mileage and car preservation.
However - there is a serious catch her - What do you do with the used oil? and does your car really need as frequent oil changes as you give it?
Please read Practical Environmentalist’s posts Save the planet with motor oil - I can guarantee you a very informative and important read.
Write your blog with non-techie tools and be widely read thanks to our large, active community.
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I believe the ‘urban myth’ of the 3,000 mile oil change came about when Chrysler could only half-solve their power/pollution/mileage problems by resorting to installing a turbo on 90% of their engines. The oil would circulate through the turbo which ran extremely hot and would cook the oil. So they instituted the 3,000 mile change interval; and as the article mentions, now that turbos are gone, puts money only in the pocket of the guy selling oil changes.
I drive a 1988 GMC G25 van. Over it’s lifetime, I change the oil when I think of it: and I don’t think of it very often. The oil is black sludge when I change it, but 21 years and 200,000+ miles later, I drive it every day.