Originally Posted By: fsskier
... Now, compare 5W30 dino oil to 0W30 synthetic. The cold cranking viscosity of 0W30 synthetic is much less than 5W30 dino oil.
I would like to , but BP is intent on providing only the API max cP value not a measured value. When you are specing oils for -40f/c you have to start looking at the pour point too, so you avoid the gell point as 0w CCS is not reported at -40c/f. Classic EoM PAO formulation should display a -54C Pour - but then you have to factor in the poor lubricity of PAO. I'm not sure I want to trade poor lubricity for a lower pour that I will never see or use. My point in summary was for the many whom dont/wont operate a vehicle below -30c, a dino will work fine.
- Just checked that esso superflo dino has a pour of 1 degree shy of -40 and a fine ccs of 5.5kcP at -30c. This should be a fine winter oil for 95% of us that run a 30wt.