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Registered
Join Date: May 2002
Location: Indiana
Posts: 4,553
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I think I found my oil leak.
I have an oil leak in my tank. After cleaning it off and observing for a few days I see it is leaking on the inboard side up high. First thought is all the crap packed up in there caused it to corrode. Then I notice it is pretty slimy around the oil filter as well. I pull off the filter and remove the filter housing and the o-ring is flat and very brittle. It feels like plastic. This is a rubber o-ring...right?
I think this is my leak. I left it off overnight and cleaned all the residual oil off. When I get home I will see if it has dripped anything. I think it was leaking under pressure. Time to call Pelican and get a new o-ring.
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Keeper of the Titanium Monkey 1975 911S (sold) 1973 911 w/3.2 (sold) 1983 911SC targa (sold) Looking for a 987.2 or 981 Cayman |
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04-28-2003, 03:54 AM
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All O ring age with time. The heating with the hot oil and the cooling afterward change the properties of the o ring so it is no longer pliable. Don't know that much about the earlier porsche cars but when I change the oil filter on my Porsche, it come with a new o ring(?) on the filter. You should smear oil on the O ring before installing back the filter, never install it dry.
I know that on some old English cars the filter is just a paper cartridge that goes inside a metal tube. The tube either has a gasket or oil ring to seal the oil from leaking out. |
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04-28-2003, 04:35 AM
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Join Date: May 2002
Location: Indiana
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It's not the oring on the filter, it's the o-ring that seals the oil filter housing to the oil tank. Same principal though. It is probably 30 years old. and has lost its elaticity.
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Keeper of the Titanium Monkey 1975 911S (sold) 1973 911 w/3.2 (sold) 1983 911SC targa (sold) Looking for a 987.2 or 981 Cayman |
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04-28-2003, 04:51 AM
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Friend of Warren
Join Date: Oct 2000
Location: Lincoln, NE
Posts: 16,493
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Well o rings are cheap and not much labor involved, I would just change it out.
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Kurt V No more Porsches, but a revolving number of motorcycles. |
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04-28-2003, 06:14 AM
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Registered
Join Date: May 2002
Location: Portland, Oregon
Posts: 12,651
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My '73 had a leak in the o-ring in the base of the oil filter mounting base (not the o-ring on the filter). After 20-30 years of faithful service, they finally fail and cause the leak you are seing.
According to some of the local p-car experts, this is a common point for our older cars. The oil tank in later cars was changed and this o-ring is no longer present.
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Harry 1970 VW Sunroof Bus - "The Magic Bus" 1971 Jaguar XKE 2+2 V12 Coupe - {insert name here} 1973.5 911T Targa - "Smokey" 2020 MB E350 4Matic |
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04-28-2003, 07:20 AM
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Join Date: Dec 2000
Location: The Hague, Netherlands
Posts: 806
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Mine had it also, I first thought is was hard plastic, it just broke. The local PC supplied me with a fresh rubber o-ring.
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Peter '13 981S '73 911T '05 996 4S cab, now gone '70 911S Targa, now gone |
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04-28-2003, 08:46 AM
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Registered
Join Date: May 2002
Location: Indiana
Posts: 4,553
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I ordered one today from Pelican. Since I snapped my now plastic o-ring in half I need a new one. I am 99% sure that is my oil leak problem. $4.63 for an o-ring sure beats $900 for an oil tank!
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Keeper of the Titanium Monkey 1975 911S (sold) 1973 911 w/3.2 (sold) 1983 911SC targa (sold) Looking for a 987.2 or 981 Cayman |
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04-28-2003, 08:57 AM
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