I'm not sure about the sealer / lubrication question, but assuming you
are talking about the o sing behind a water cooled engine oil cooler I
do have a bit of advice.

The oil cooler o-ring won"t come offwithout disconecting the oil
cooler from your colant lines. Get a couple of pairs of needle nose
vice grips and put hose over each of the claws, this way you can clamp
off the coolant lines to avoid loosing too much coolant in the
operation.

Chris

On Thu, 3 Mar 2005 07:12:12 -0500, Edward Maglott
<emaglott@buncombe.main.nc.us> wrote:
> Bentley mentions using some kind of sealer on the mating surfaces, and also
> talks about lubricating the O-ring with motor oil.  What is the list wisdom
> on this?
> Edward
>