# Oil... how does it work? \[split\]

**URL:** <https://forums.speedlife.net/t/oil-how-does-it-work-split/262189>\
**Category:** Shift518 Off Topic\
**Created:** [January 6, 2012, 11:40pm UTC](https://forums.speedlife.net/t/oil-how-does-it-work-split/262189 "2012-01-06T23:40:40Z")\
**Posts on this page:** 1\
**Showing post:** 68

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**Author:** ![TurboTravis](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/turbotravis/32/6406_2.png) [@TurboTravis](https://forums.speedlife.net/u/TurboTravis)\
**Post date:** [January 8, 2012, 3:27pm UTC](https://forums.speedlife.net/t/oil-how-does-it-work-split/262189/68 "2012-01-08T15:27:41Z")

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> [@t-up to hsbc](https://forums.speedlife.net/t/t-up-to-hsbc/47763/2):
>
> Why would I agree with that?
> 
> The lower the number the thinner the oil is. If it’s just one number on the bottle (30, “straight 30” it’s only been tested at one temp (210) and never tested at a lower temp.
> 
> Lets go even to room temperature. A straight 50 oil vs straight 10 oil, which would you say is thicker?

SAE 50 is thicker than SAE 10 at any given temp.

But you’re trying to compare them AT THE SAME TEMPERATURE!!!

Again, what’s thicker, an SAE 5 at zero degrees, or an SAE 30 at 210 degrees?

It’s 100 percent, without a doubt SAE 5.

You don’t understand how multigrade oils are rated.

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