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Reply to "I think I'm sticking with Redline"

quote:
Originally posted by ADFD1:
Well Tim 40*C and 100*C are two numbers used in the oil industry. If an oil is flowing better at 40*C it is flowing better at 10*C and even lower, so it is doing its job better at colder temps as in freezing and below, all the way up to operating temps. [
So you think all oil viscosities chart in a straight line linear fashion from 10C and lower to operating temperature? Do you have a graph showing this for all 4 oils? And proof that a slightly "thinner" oil film provides more protection than a slightly "thicker" oil film at all temperatures? Please post.

quote:
Originally posted by ADFD1:In the winter it can take 20 minutes or more to reach operating temps. I've read that a million times before so it is pretty common.
a million times?
quote:
Originally posted by ADFD1:The three oils I mentioned were developed for Hybrid cars which are started and stopped frequently and are hard on engines because of that. They were also developed for 5W20 applications offering better cold protection, so it is a big deal IMO. An oil that has a Viscosity of 38 cST at 40C is better for cold protection than one that has a Viscosity of 49 cST at 40C.
Please provide proof. Just because an oil has a slightly higher viscosity than 3 other oils at 104F, does not necessarily mean it will be more viscous than the other 3 in cold weather.
quote:
Originally posted by ADFD1: That 38 cST oil will get to the desired operating viscosity faster too.
Please provide proof of this statement also.


quote:
Originally posted by ADFD1:Just wondering this is off Amsoil's site why is it they use a certain set of numbers when testing ASM, then different numbers for testing SSO? Speed and temps are different, IIRC a slower speed is harder on this worthless for testing oil test.

Four Ball Wear, 75°C, 1200 rpm, 40kg, 1 hour (ASTM D-4172B)
0.35



Vs.

SSO
Four-Ball Wear Test (ASTM D4172: 40kgf, 150°C, 1800 rpm, 1 hr) Scar diameter, mm 0.406
Two different viscosities. Two different ASTM methods. How would 1200 revolutions be harder than 1800 revolutions?
Last edited by timvipond
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