[T3] Clean oil cooler?

Jacob Adam Schroeder jacob.schroeder at gmail.com
Wed Nov 12 07:16:34 PST 2014

Great, thanks Jim & Jon.  I will flush mine out and get it cleaned up.

Jim: I think I already have a piece of foam from you for this purpose.  I
remember when I removed my oil cooler I observed that the foam was gone.
Other than that, I just set the oil cooler aside.  Now that I am close to
reassembly, it was time for me to figure out what to do with the oily

On Tue, Nov 11, 2014 at 2:38 PM, Jim Adney <jadney at vwtype3.org> wrote:

> On 10 Nov 2014 at 22:13, Jacob Adam Schroeder wrote:
> > I am doing a rebuild and am curious how I should clean out my old oil
> > cooler or whether there is a source for new oil coolers for T3s (as there
> > is for Type 1s).
> I don't think I've ever seen a source for new Type 3 coolers, but I
> have several good used ones here. I've never seen a bad one.
> I clean them in parts solvent, inside and out. I let the insides soak
> while I clean out the external air passages, which are always
> clogged, on the inlet side, with dirt and oil. Then I straighten out
> any bent fins, so the air gets a clean shot thru the cooler. You will
> always find a bunch of bent over air cooling fins on these.
> Once the inside has soaked, I pump parts solvent thru the cooler both
> forwards and backwards, to flush out anything that the soaking might
> have loosened up. If you have an engine that self-destructed
> internally, you would want to be particularly thorough about this, or
> just replace the cooler. I've been fortunate and never had to face
> that problem.
> Finally, the coolers originally came with a foam pad over the top.
> This pad sealed the gap between the top of the cooler and the
> underside of the tin. This keeps cooling air from leaking out without
> doing any cooling. Unfortunately, the OE foam pads were made up
> something that disintegrated in parts solvent, so the OE pads are all
> gone by now. The good news is that I have foam that I've cut to
> replace the OE pads. This foam turns out to be more durable than the
> OE stuff. If you look at the top of your cooler you can see the
> yellow/brown remains of the OE glue that held the OE foam in place.
> My replacement foam is cheap and I strongly recommend installing one
> of them any time an engine is rebuilt, unless it's already been
> replaced.
> --
> *******************************
> Jim Adney, jadney at vwtype3.org
> Madison, Wisconsin, USA
> *******************************
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