1551 oil filter

Old 12-03-21, 03:57 PM
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1551 oil filter

Hi All, we have a slight oil leak around the top of the filter, replaced filter, same issue, any thoughts on how to seal it better, I doubt we could add a second O ring.
Geo 🇺🇸
Old 12-03-21, 06:24 PM
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Oil filter on what?
100% sure the old sealing ring is not stuck to the filter housing?
Old 12-03-21, 07:55 PM
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.....And are you sure its the right filter? The collar of the filter might be hitting the block, preventing the o-ring from sealing.

Edit: by doing a quick google search on a 1551 oil filter... most of the searches come back to a NAPA 1551 hydrualic filter.

Without knowing what you're working on.......... just some hit & miss questioning/answers/ideas/notes.
Old 12-04-21, 02:30 AM
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Like Joe, the first thing I'd check would be to see if the old gasket/ring didn't get stuck to the engine. I've had that happen more than once but always caught it before I added oil.

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