Ok, so I've gone synthetic...

Mike Miller mikemilr at blackfoot.net
Tue Nov 23 13:36:41 EST 2004

----- Original Message ----- 
From: Brandon Rogers

which leads me to this question-
anybody using same oil year-round who is in a climate with real (90F+)
summers and winters (below freezing often)?  If so what?10W-30?


I follow the same change frequency - but more likely with about 10k change 
intervals. I use Mobil1 15w50 year round in Montana. Losta summer time temps 
in the 90-100 range and winter temps can do 30 below but I would say more 
typical is in the -5 to +10 range. Taking a bottle of 15w50synth alongside a 
bottle of 15w40 Delo 400 in the winter, the synth pours _much_ better than 
the 15w40.


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