Mixing 0W-20 and 20W-50

[SwedishRider]

I am still working through a VOA clarification on a sample of G-OIL 0W-20 that I sent in for analysis and came back with wildly different results

: https://bobistheoilguy.com/forums/threads/g-oil-ult-biodegradable-full-synthetic-0w-20-voa.206333/

Until the second set of labs come back, I'm not really convinced of anything just yet...

Having said that, it's time to change the oil in my '07 Ranger 2.3L 4cyl that requires 5W-20. I have some sealed Amsoil ARO 20W-50 kicking around with no other purpose at the moment. If we assume the lab's viscosity of 7.2 cSt@100C is correct, what would happen if I mix 1 quart of 20W-50 to three quarts of 0W-20 to fill the 4qt sump? Would I end up in the ballpark of a 5W-20? This is a grocery-getter truck remember...

 

[webfors]

Probably closer to a 5w30 IMO.

 

[nitehawk55]

That's the CATERHAM HD blend !

 

[JR]

Save the 20w50 for the ope's. i used 15w50 in a honda powered pump at the farm. it was a top off fuel in remote tank ad switch valves for switching arigation of field, 24/7 operation. one week oci. ran for years on 15and20w-50.. ran 6months a year for twoo plus years.

ken

 

[SwedishRider]

I originally bought the ARO to change the transmission oil in my tractor, but I bought more than I needed and won't be using the remaining 20W-50 for at least a few years. I just figured it would beef up a light 0W-20 to relatively close to the engine's recommended 5W-20 and use up extra oil at the same time.

 

[Finz]

Jim... I can't run this on an iPad but this calculator looks like it may help you figure it out


Mixing

 

[GutsyGecko]

Do it! I mix 5 quarts of 0w-20 Pennzoil ultra and 5 quarts of 20w-50 for my truck all the time.

 

[SwedishRider]

Thanks for the link. I ran the numbers and it came back with 9.02 cSt @ 100C. Would that make it a 20wt or a 30wt?

 

[Lead Shoes]

Originally Posted By: JimCT
Thanks for the link. I ran the numbers and it came back with 9.02 cSt @ 100C. Would that make it a 20wt or a 30wt?


20 wt.

 

[SwedishRider]

Looks like it'll fit the bill then. Thanks!

 

[CATERHAM]

Hi Jim,

I think a full quart (25%) of ARO 20W-50 would give you a pretty heavy 5W-20.
Just using 2/3rds (17%) of a qt of ARO would be all you'd need to thicken up the G-Oil. If that's too much messing around then just go with the full qt, it'll still be a 5W-20.

 

[daves87rs]

I like the 2/3rds idea...

 

[Cristobal]

It looks like no issue to me.

Just figure your weather & you are good to go!

 

[SwedishRider]

Thanks everyone. I changed the oil today, and went with a full quart of ARO 20W-50 and three quarts of G-OIL 0W-20. I ran it for a while, and it seems to run normally. Again... this isn't a high performance application, it gets me back and forth when needed.

Now, what to call that blend... the G-SOIL 5W-20 maybe!?!?