Blending 0W-16 with 5W-30

[The Critic]

I have 1.5 qt (or so) of M1 0W-16 that is leftover from my friend's 18 Camry that he traded in. I would like to blend it with a heavier grade, presumably 5W-30, to achieve something close to a 20wt. The application is my Prius which has a 4.4 qt sump.

What ratio of 5W-30 to 0W-16 should I be using?

The M1 0W-16 is 7.2cst at 100C.

 

[The Critic]

I guess I answered my own question:

Mixing viscosities | Widman International SRL

www.widman.biz

The 11.1cst oil is M1 5W-30. This assumes a ratio of 1.5 qt 0W-16 to 2.9 qt of 5W-30.

 

[spasm3]

Mixing viscosities | Widman International SRL

widman.biz

With an oil thats 11.0 cst. 10% of the 0w-16 would be close to a 10.5 using the calculator.

 

[spasm3]

I guess I answered my own question:

View attachment 79902

Mixing viscosities | Widman International SRL

www.widman.biz

The 11.1cst oil is M1 5W-30. This assumes a ratio of 1.5 qt 0W-16 to 2.9 qt of 5W-30.

You beat me to it!

 

[spasm3]

I think you could also use mobil 0w-40 and use the whole 1.5 quarts and come close. But then you would have some 0w-40 left over lol.

 

[Zaedock]

I would keep it simple and go 50/50. That's 8.9cSt @ 100*C. Perfect.

 

[JohnnyJohnson]

Me I'd keep it simple I'd mix it with 10W-30 50/50 and use it in the mower!