I neglected to change out the 20W50 in my 86 before a trip to the
midwest this fall.  When we got some cold weather, I had a gusher from
the top of the cooler for a few seconds every start.  Changing the oil
to 10W40 fixed it.  I was thinking the high oil pressure blew past the
seal on start-up.  Is this right and if so, should I bother to replace
the seal?

JN

KENWILFY@AOL.COM wrote:
>
> There is an o-ring on top of the cooler than is known to fail in cold
> weather.