I usually run bit heavier weight oil in the summer and lighter in the
winter, some Lucas or stp can help bridge the gap. My buddy says stp
stands for Stop That Pounding.

Velma 82 na diesel westy
On Jul 15, 2013 1:43 PM, "Stuart MacMillan" <stuartmacm@gmail.com> wrote:

> Ignorance is bliss, at least for a while.  My worn 1.9 with 140k miles runs
> 5-8 psi idle after a run on the freeway, and 22-26 psi at 3000 rpm when hot
> with Mobil 1 15w-40.  Pressure is 60 psi at cold start up. This is in nice
> temps, about 70 degrees, and mostly flat terrain.  I knew it was bad, but I
> just want to get another 2000 miles out of this engine, and I'm staying on
> the NW coast this summer to avoid long climbs and hot weather.  I wonder if
> 20w-50 would boost it a little.  STP?  Or just forget about it?
>
>
>
> What do you think?
>
>
>
> Stuart
>