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Old 05-30-2019, 06:44 PM   #5 (permalink)
rmay635703
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Join Date: Jun 2008
Location: Somewhere in WI
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Silver - '10 Chevy Cobalt XFE
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Quote:
Originally Posted by Shaneajanderson View Post
I've always been under the impression that upstream O2's should be replaced every 20K as a maintenance item here.
Huh?

Mine is original at 260k
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