Quote:
Originally posted by Johnny Law
Not to throw a monkey wrench into this, but what about low mileage between oil changes?
I change my oil at around 1500 miles (dino oil) or just about 6 months so that I do not get sludge buildup. I am lucky enough to live about a mile from work, and I do alot of stop and go city driving. My truck is a year and a half old already and I only have 7500 miles on it.
My question is, would it be worth it (cost) to switch to synthetic, would the synthetic build up any sludge if I waited the full mileage, or what time period between changes?
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With just about any brand/type of oil you use I don't think you'll find a manufacturer that recommends using the oil beyond a year regardless of the mileage. Unless you were to use oil analysis, and in your case it just isn't cost-effective.
Your best bet is to continue to do what you are doing. Use a good brand like Mobil or Chevron, though as I find that Pennzoil and others that contain parrafins have a greater tendency to form sludge. Also, use a good oil filter -- the Purolator Pure1 is the most cost-effective buy out there.
~ Fred