Custom Blending Valvoline VR1 Test

[turbine68rt]

Here's something I've been curious to find out with some surprising results. I have a quart of 10w-30 and 20w-50, both in Valvoline VR1. Part# 822388 & 822347 respectively. For this test, both containers were stored at 75°F. Using a Ford #4 cup, I timed each oil 10 times and took the average as a good representation of respective viscosities. The 10w-30 had an average of 26.15 seconds. The 20w-50 had a 63.92 seconds average. I then poured an exact equal amount into a measuring cup and mixed the two oils well. Took another 10 samples of the mixed oil and came up with an average of 36.80 seconds. Taking the times from both oils (90.07) and splitting it would be 45.03. Not the case in this test. It seems only slightly thicker than the 10w-30. So even at a 1:1 ratio it will still be closer to 10w30 than 20w-50 viscosity.

 

[Durandal25]

Through!! Way cool sir!

 

[Jerry Hall]

Interesting information.

 

[moparedtn]

Got a little time on your hands, eh?

 

[Jerry Hall]

Do you think mixing it 50/50 makes it 15W 40?

 

[turbine68rt]

Got a little time on your hands, eh?

The wife was watching her brothers kids tonight. Perfect time for a little automotive experimentation.

 

[moparedtn]

Well, take it to the end then and get a quart of 10W/40 to compare straight up!

 

[turbine68rt]

Do you think mixing it 50/50 makes it 15W 40?

Going into it, Jerry, I thought it would but it seems that it leans towards the thinner side of the halfway point. Why? I have no idea.

 

[turbine68rt]

Well, take it to the end then and get a quart of 10W/40 to compare straight up!

I did this test because 10w-40 isn't available in VR1 anymore. I didn't want to vary the control by using a different brand/type to test it against. Just wanted to see what resulted in equal amounts.

 

[moparedtn]

I did this test because 10w-40 isn't available in VR1 anymore. I didn't want to vary the control by using a different brand/type to test it against. Just wanted to see what resulted in equal amounts.

Well that sucks!

 

[toolmanmike]

Here's something I've been curious to find out with some surprising results. I have a quart of 10w-30 and 20w-50, both in Valvoline VR1. Part# 822388 & 822347 respectively. For this test, both containers were stored at 75°F. Using a Ford #4 cup, I timed each oil 10 times and took the average as a good representation of respective viscosities. The 10w-30 had an average of 26.15 seconds. The 20w-50 had a 63.92 seconds average. I then poured an exact equal amount into a measuring cup and mixed the two oils well. Took another 10 samples of the mixed oil and came up with an average of 36.80 seconds. Taking the times from both oils (90.07) and splitting it would be 45.03. Not the case in this test. It seems only slightly thicker than the 10w-30. So even at a 1:1 ratio it will still be closer to 10w30 than 20w-50 viscosity.

VR1. Both conventional?

 

[VANDAN]

For what it's worth, my Engine Builder told me to run VR1, 10w30, ALWAYS, in the stroker he built for my '63. His background was building NASCAR Engines for a High Profile Team, for 35 years, and they won many races. Just wanted to pass that on...

 

[Bee1971]

3 Quarts of VR1 20w50 + 2 Quarts of VR1 10w30 =

5 Quarts Of Oil



Anyways , interesting subject as I have a case of each viscosity in the garage

 

[turbine68rt]

VR1. Both conventional?

Correct

 

[69L48Z27]

Now test them at 200*.

I’m with you on them not having 10w/40. Growing up in the 80’s they all said 10w30 was too thin and 20w50 was for worn out engines. We ran 10w40 in everything all year. I guess the mixing is logical but I wonder what happens at operating temp. Would image it’s linear but who knows. I like the price of VR1 but no 10w40. I’m sure 10w30 would be just fine.
Are you running this mix in anything?

 

[400sforever]

I'm running 8 quarts of 20-50 vr1 in my 512 stroker with no issues.. also running 8 quarts of it in my drag cars 440

 

[khryslerkid]

For what it's worth, my Engine Builder told me to run VR1, 10w30, ALWAYS, in the stroker he built for my '63. His background was building NASCAR Engines for a High Profile Team, for 35 years, and they won many races. Just wanted to pass that on...

Must have been Mark Martin!

Then they changed sponsors and the oil became really stiff

 

[turbine68rt]

Now test them at 200*.

I’m with you on them not having 10w/40. Growing up in the 80’s they all said 10w30 was too thin and 20w50 was for worn out engines. We ran 10w40 in everything all year. I guess the mixing is logical but I wonder what happens at operating temp. Would image it’s linear but who knows. I like the price of VR1 but no 10w40. I’m sure 10w30 would be just fine.
Are you running this mix in anything?

Not yet. Thought of doing a 50/50 mix and seeing if the hot pressure changes or not. If I do I'll definitely post results.

 

[Officer Higgins]

 

[66383]

Must have been Mark Martin! View attachment 963814

Then they changed sponsors and the oil became really stiff
View attachment 963817