CI-4 oil at walmart

mmidlam · May 9, 2009

Noticed Walmarts Tech brand of 15w-40 oil is still rated CI-4, so it has more antiwear ZDDP than name brands with CJ-4 rating.
I think all older engines need the higher ZDDP.

Brian Jasper co. Ia · May 9, 2009

CJ-4 means it's low ash and has nothing to do with ZDDP. Low ash is mandatory for engines with a particulate filter in the exhaust. The lubricating properties are the same.

mmidlam · May 10, 2009

I am not sure about that.
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CI-4 oil at walmart

mmidlam

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Brian Jasper co. Ia

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