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Old 01-03-2014, 12:04 PM
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JimN JimN is offline
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Join Date: Jul 2004
Posts: 13,163
Originally Posted by merCrewser View Post
Sorry to throw a wrench into this thread.....

You can run crappy walmart oil and change it every other year and notice no difference.....
I used WalMart oil for a long time in my '90 Silverado and never had a single issue. It's not as if they use 1000 different refineries and have that same number of ways to screw it up. I had also used Valvoline DuraBlend and that worked, too. Eventually, when I guessed that it was approaching 300K, I started using their high mileage oil with no problems. I sold it and still see the guy driving- no smoke or other indication of trouble. I tried WalMart synthetic in my van the last time and it actually runs quieter than Mobil1.
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