Dexron ULV vs Valvoline ULV

[Atlas]

Anyone know of any key differences between the two fluids? Valvoline appears to be commonly available at retail auto parts stores. Dexron is purchased at a dealer or ordered online, at least around here. What do you use when you perform maintenance on your transmission requiring ULV?

 

Safe to mix the two? Are they the same? Different?

[Grumpy Bear]

https://sharena21.springcm.com/Public/Document/18452/eb07a7bd-14d0-e911-9c2a-ac162d889bd1/519ec084-52d0-e911-9c2a-ac162d889bd1

 

https://parts.gmparts.com/product/acdelco-gm-original-equipment-dexron-ulv-automatic-transmission-fluid-1-qt-19352619

 

Saw the post on the forums page and thought others might have the same question or I wouldn't reply.

 

No red flags I can see. Lower pour point and 40C viscosity only directly published data. Speaks to lighter base oil which is not an issue. Fully compatible. 

[Atlas]

21 hours ago, Grumpy Bear said:

https://sharena21.springcm.com/Public/Document/18452/eb07a7bd-14d0-e911-9c2a-ac162d889bd1/519ec084-52d0-e911-9c2a-ac162d889bd1

 

https://parts.gmparts.com/product/acdelco-gm-original-equipment-dexron-ulv-automatic-transmission-fluid-1-qt-19352619

 

Saw the post on the forums page and thought others might have the same question or I wouldn't reply.

 

No red flags I can see. Lower pour point and 40C viscosity only directly published data. Speaks to lighter base oil which is not an issue. Fully compatible. 

 

 

See? I appreciate that. Thank you.

 

Compatible, but probably just different enough to trip my OCD. So I will wait for the $14 quart...grumble grumble...of Dexron ULV to arrive before installing the PPE thermal bypass. Truck is brand new <500 miles so I don't want to be mixing fluids just yet. Else I could have picked up a quart of Valvoline ULV at the store yesterday.

Edited August 18, 2025 by Atlas