...then why bother marketing 5W30 or 10W30 when 0W30 is superior in startup than of the two grades mentioned?
Thanks,
Oz
quote:I really doubt that the average consumer even thinks about it. We are all a bunch of freaks really, to give this much time and thought to it.
And for good reason. Best overall economy, film strength, and low level of VII's.
quote:Is the difference in VI improvers between 5W30 and 10W30 that significant? Thanks, Oz
And for good reason. Best overall economy, film strength, and low level of VII's.
quote:Yeah right it will
A: Mobil 1 5W-30 will protect your car in the summer as well as Mobil 1 10W-30. Your owner's manual specifies 10W-30 above 20º F not because of the heat of summer, but because of the absence of cold. If you use 10W-30, the oil could be too thick to provide adequate protection at start-up for temperatures below 20º F.
quote:What is the CCS viscosity though. I bet one is measured at -25 and the other -30. Also a 0w30 will be measured at -35? I think. My 0w30 has been holding up well, been using it for the last 3 year. Vis acutally went up not down. Barely a 40wt. This is becuase I didin't change the filter at 6 months like I was supposed to. I still say a good 0w30 will outperform a 10w30, does better in the cold, and has about the same high temp protection.
Originally posted by Patman: I 10w30 is -49F, 5w30 is -54F, not much difference there! Or look at Valvoline Synpower, both the 10w30 and 5w30 share the same pour point of -42C! So in that case where is the advantage of using their 5w30??