[s-cars] Oil Temperature

[Calvin Craig]

I was tracking my car (B5 S4) yesterday at High Plains Raceway east of
Denver and my oil temps were roasting at about 285-295.  The last time I ran
they were about 270-275.  The only changes were the weather - 10 to 15
degrees warmer than last time, and my oil weight 10W40 vs. 10W30 - both
times were Royal Purple, by the way.

So in everybody's experience does higher viscosity = higher or lower temp?

Thanks.

--Calvin