ZDDP content bad for pre cats?
04-25-2012, 03:22 PM
#1
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Location: Carmichael, CA
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Year: 2001
Model: Cherokee
Engine: 4.0
ZDDP content bad for pre cats?
I'm just curious if the high zinc content of the Rotella 5w40 I use will slowly ruin my Pre-Cats in my CA emissions Cherokee?
04-25-2012, 05:03 PM
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Year: 1990
Model: Cherokee
Engine: 4.0 i6
I'd like to know as well as I have a california jeep and am thinking about switching to rotella for the next oil change.. Unless it does more harm to the jeep than the pennzoil high mileage I have been putting in..
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