You don't have to pull the engine to install an external oil cooler, though given the miles on your engine, there certainly might be other reasons to dig into the engine itself.  mcneely

---- Robert Clemmer <n51219@COMCAST.NET> wrote:
> I have a 91 2.1 WBX that just turned 300K miles on this past trip to FL.
> The oil pressure is fine until the oil temperatures start to go on the north
> side of 220 then it starts dropping proportionately with oil temperature.
> Oil temperature starts climbing proportionately with outside air temperature
> when the temperatures are above 85.  When it is 95 or higher outside my oil
> temps can go 240-250 and pressure will drop to 30 psi at 4000 rpm.
>
>
>
> Those of you have that have installed external oil coolers, how effective
> have they been?  What kind of temperature drop can I reasonably expect if I
> decide to install an external cooler when I pull this engine to "freshen it
> up"?
>
>
>
> Thanks for your comments, BobC

--
David McNeely