> > > Seems silly to bug Jim for a little gasket, oh well I should talk to him about other things anyway.
> > >
> > > And Yes it's the adapter to block gasket, not the o ring between the cooler adapter, which BTW is not an old filter gasket, there is a
> > > part, Dorman Seal P/N 917-036
> > >
> > >
http://www.gmcmhphotos.com/photos/oil-filter-base-to-oil-cooler-adapter-sealing/p55887-oil-filter-seal-dorman-seal-ph-2-230-o-ring.html
> > >
> > > [
http://www.gmcmhphotos.com/photos/data/6677/medium/Oil_Filter_-_Dorman_-_O-ring.JPG]
> > > Oil Filter Seal - Dorman Seal - PH 2-230 O-Ring
> > > From left to right is an Oil Filter Seal, a Dorman Seal P/N 917-036 (available from O'Reilly's), and a Parker Hannifin O-ring. I believe
> > > that the Parker Hannifin O-ring (PH 2-230) is the best part for the
job. Seal groove dimensions are: 2.803 OD X 2.437 ID X .120 Depth.
> > >
www.gmcmhphotos.com
> >
> > I bought several of the Parker Hannifin O-ring (PH 2-230), and tried them out. Actually, a filter gasket from a discarded oil filter (for the
> > Olds 455) when doing an oil change, just seems to work better. Just what I've noticed.
>
> I agree with Larry. I have had the same experience. Re-torque it on the first and maybe second oil change.
>
> On the oil filter adapter to block gasket. A few years ago I as able to get one in stock at a local Auto Value / Bumper to Bumper auto parts
> store.
When I first started this GMC thing the Oil filter o ring was the only thing we had and was being recommended by everyone in the know. I had some
leak issues. Got to talking with the great Bob Drews about the o ring and how it squashes out and leaks. He said…”Larry, think about that o ring
and what it was designed for on the oil filter. It is a spin on and slides on contact for half a turn. You put a little oil on it so it slides to
tighten. Your hands don’t have near the torque that a wrench has when tightening the filter adapter. And the oil filter adapter just tightens
straight down with no twist and no oil on the o ring. So when you use the oil filter o ring, don’t oil it down. Put it in and tighten down
dry.”
So that is what I’ve been doing ever since. Never a leak. JWID
--
Larry
78 Royale w/500 Caddy
Menomonie, WI.