official SAE viscosity specs, 5w20 vs 10w30 vs 20w50

11-11-2008 | 08:43 AM

#1

arghx7

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official SAE viscosity specs, 5w20 vs 10w30 vs 20w50

i think i'm going to stick with the 20w50, at least given the climate of my area (southeast). and yes I know that the stuff I have highlighted are not the only important statistics on this chart.

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official SAE viscosity specs, 5w20 vs 10w30 vs 20w50-oil_viscosity.jpg

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11-11-2008 | 09:01 AM

#2

newguy

zoom fuckin zoom

Joined: Sep 2008

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From: PA, USA

ive been using 5w30 but may use 5w40 now. besides when Johnny Tran asked for advice Lance went 40w

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11-11-2008 | 09:26 AM

#3

mysql

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From: Florida

I'm using 10w40 right now.

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11-11-2008 | 09:28 AM

#4

nycgps

Out of NYC

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From: Planet Earth

Havent keep up with SAE spec lately, ahh good read.

I know 10w40 will work for NYC. Ahh,

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11-11-2008 | 12:00 PM

#5

Icemark

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From: Rohnert Park CA

Interesting that just moving from a 5W20 to a 5W30 comes close to almost doubling the shear stability.

And the difference between a 10W and a 20W is only 10 degreesC (or about -18F colder) on low temp pumping viscosity.

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