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Re: Pre-Filling Oil Filter, Adding Clean Oil to Flush/Wash?!
Posted to Technical Discussion Forum on 11/21/2023

Glenn, I prefill spin-on filters provided they are not the inverted type. Been doing so for decades.

Does it help? Maybe. Does it hurt? Don't think so.

One situation where I believe it does help is if the engine sits long enough to cool off after the oil i... Login to read more.