Mixing 5w-30 oil from two different manufacturers

2024 Views 3 Replies 3 Participants Last post by Yoyizit, May 7, 2009

Discussion Starter · May 1, 2009

Is it a problem?

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Discussion Starter · #4 · May 7, 2009

Thanks, guys.
It's not synthetic, just Quaker State mixed with some left over Valvoline qts.

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