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Marvel mystery oil

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#13

07-14-2016, 03:59 AM

Tunnaman88 Tunnaman88 is offline

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Join Date: Oct 2014

Location: Sandwich Ma.

Posts: 180

I bought my 86 V with a Mercruiser 4.3l vortec motor that sat for a few years and it was stuck pretty good,, filled ea cyl with MMO . let it sit for a few weeks...... worked her gingerly to free... Purrs like a kitten now!

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1986 V-20
2001 Mercruiser 4.3L

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