I haven't compared gauge readings (I'm just now hooking up my oil
pressure gauge) but I used 5w50 all last winter and put in a fresh batch
this spring prior to driving to BusFusion (600 miles each way) and never
had a flicker at the oil light.

The 5w50 is MUCH better for cold starts during the coldest of northern
Maine winters.

Mike
'84 GL 7 pass
'85 GL Westy
Houlton, Maine

Tabe Johnson wrote:
> I've been having trouble getting 15W50 mobil 1 oil here in the
> Great White North.  Has anyone with an oil pressure gauge used
> 5W50 and compared it to 15W50?  Was there any difference in hot
> pressure?  (In principle there shouldn't be... but real life is
> a different story!)
>
> I'd do the experiment but at C$30-$40 for the oil it gets
> expensive!
>
>
> tabe johnson/87 westy
>