Don't Understand Why Folks Are Splitting Hairs...

[ltslimjim]

From what I've gathered, it seems that VI 'improvers' have different qualities as well. More doesn't mean a 'weaker' extended drain capable oil. Each app varies. We know this!

 

[BobFout]

Originally Posted By: steve20
"""0W rated oils dont have any advantage in starting above -10deg"""


The -10 degree portion of the quote: Is this a known fact I missed, or some backyard wisdom?


What ARCO said may apply for some oils [some specific 0w30, 5w30 and 10w30], but certainly not all oils.

 

[glum]

Originally Posted By: bepperb
Also note the 0-30 has a lower VI than the 5-30.

And more VIIs hence less base oil.

 

[hattaresguy]

Big time OCD here.

 

[VNTS]

May be a better base oil with less VI added to it. hence the lower VI#.

I thought all things being equal, a 0W-X oil have better base and better pump ability than the 5W-x and 10W-X oils.

Dont be fooled with a high VI unless it is a PAO or ester.


Originally Posted By: glum
Originally Posted By: bepperb
Also note the 0-30 has a lower VI than the 5-30.

And more VIIs hence less base oil.