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My Monterey

1999 Volvo Penta DP Oil Drain Bolt oring mystery

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I changed the out-drive oil on my new to me Monterey 322 last fall and noticed that both out-drives are slowly leaking at the drain bolt.

I can only think that the size of oring the marina gave me was wrong because when I put them onto the bolt they did not seem to sit in the channel very well, by that I mean they did not fill in the channel. Also the marina gave me 3 different orings for the drain, vent and dipstick, but my research suggests that the vent and drain are the same size??

Any info/advise would be appreciated.

Thanks in advance

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