I have been reading some older threads and I get the idea that low temp. (cold cranking) viscosity is a better indicator of cold weather behavior than pour point. Is that correct? I noticed that when comparing 5w30 oils, Pennzoil dino has a very low pour point of -42C but a Ccs of <6600@-30C. Chevron Supreme has a -36C pour point but the Ccs is 5700@-30C. M1, a true synthetc 5w30 has a nice low 3600@-30C. So is it the cold crank viscosity that's the true measure? Thanks.