Hi Endo,
I'd flush your system like you've doing every two years to avoid
the electrolysis that'll eat the head gasket, water pump seal, and core
plugs. And go ahead and replace the fan clutch.
The oil temperature lags behind the water, but eventually catches
up, if you had checked it you would have seen it with the constancy of
water, with about the same lubricating qualities. If your going to get
caught in traffic jams, then switch to 20/40, or 20/50 like I use at
three hundred thousand miles. Remember pickups with the trailer package
also have oil coolers.
God Bless America, ßill O|||||||O
http://www.billhughes.com/

Endo wrote:
>
> I was idling in traffic on the 4th waiting to get into parking at the new
> Heinz Field in Pittsburgh for fireworks and all of a sudden my temp jumped
> up to just below the red and the 'check gauges' light came on. I did a
> quick u=turn and got into a non-congested lane and got moving to get some
> air flowing and it calmed down to a little over 210, but just a hair higher
> than usual. I was running the a/c on max since i had the top on still.
> Shortly after it cooled back down to a more reasonable level I noticed
> another strange problem....when I came to a stop the oil pressure would dive
> down to zero and the light would come on again. Once it cooled down for
> good after parking for awhile this went away too. It's done it a few more
> times since and it's usually during slow driving with the a/c on. The oil
> level seems fine and it's Valvoline full synthetic 10w30. Coolant is topped
> off and is a nice green color, not nasty stuff.
>
> Any theories for this happening?
>
> Shawn