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International Automotive Technicians Network
Re: Oil discussion
Posted to Technical Discussion Forum on 2/20/2021

Sadly, I also agree that you won't change his mind.

His car, his money, he is paying for it already in loss of fuel economy and will pay more, much more when engine failure arrives.

Running 10w30,10W40 or thicker '' cheap oils" will undoubtedly cause cokin... Login to read more.