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Re: [T3] Oil cooler/o-ring question

On 24 Jan 2005 at 13:47, Neil Lynch wrote:

> Given - newly acquired 1970 Fastback, below 20 degrees, probably 20-50W
> oil or possibly even straight 30W.
> I am getting some fresh oil seepage (about a teaspoon per 2 minutes)
> from under the oil cooler.  I presume I have very high oil pressure
> from thick, cold oil getting past the o-rings on the oil cooler.

You can try tightening the bolts. They should just tighten until metal parts 
come together and meet, capturing the seals between the parts, so you stop 
tightening when you feel the torque go up quickly. You will find that 2 of the 
bolts are hard to get to the heads.

The most likely thing you'll find is that the bolts are already fully tight and 
that you just need new seals. Replacing the seals is straightforward, but a lot 
of work because it requires you to take off almost everything on the left side 
of the engine.

Once you get there, you need to have the correct seals. I know which seals 
originally came on your '70, but if the oil cooler and/or case has been 
replaced, this could make a difference. I have a text file I can send you that 
describes the 3 different seals and with which parts each is used. You can 
inspect the engine and determine which seals are needed without disassembling 
anything. Email me if you want a copy.

Rebuilt engines with the wrong seals are relatively common.

At your temps, I'd suggest 10W-40 or 15W-40 oil. In spite of what everyone else 
says, I'd never recommend 20W-50.

Jim Adney, jadney@vwtype3.org
Madison, Wisconsin, USA

List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org

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