LS - 1st and 2nd Gen (1990-2000) Discussion topics related to the 1990 - 2000 Lexus LS400

Mystery oil leak...from where?

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Old 05-13-08, 01:55 PM
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Bradster
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Default Mystery oil leak...from where?

Gotta small leak around the oil filter (drips down from filter) changed the oil & filter and still had the problem...valve cover gaskets were replaced less than 8000 miles ago and were tightened after 3000 miles or so...could it be the infamous dipstick O ring? I can't seem to find any info on that..perhaps oil pump O ring? Any ideas?
Old 05-13-08, 04:52 PM
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lexie
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may be the oil filter is not tighten enough.

how much did the valve cover gasket cost you ?
Old 05-13-08, 07:14 PM
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Bradster
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Both the old filter and new filter were properly tightened and still the leak was there...valve cover gaskets were factory OEM....
Old 05-15-08, 08:49 AM
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Bradster
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It was brought to my attention that the problem could be with the oil filter housing (15609) or perhaps the gasket (15691) that is used with that housing...Any thoughts?
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Old 05-15-08, 08:11 PM
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paulo57509
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No. 15691 would be the next thing to replace.

Are you sure you're not over-tightening the filter? Over tightening can lead to leaks too.
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