i too have the PPE valve, but have yet to install it. I want to see how high the temps go when hauling the dragster first.

I'm ok with high 190's temps......

That said, 111 is too cold for me.

Let us know if you tow something heavy, and where the temps end up.

 

I've also read that Amsoil does not make a ULV fluid, only a LV and that shift quality and strategy suffers in the 10 speed when using the LV fluid...... Thoughts?

 

This information is incorrect, Amsoil does make a transmission fluid for the 10L80 that is GM recommended, DEXRON ULV, It is the "AMSOIL Signature Series Fuel-Efficient Synthetic ATF - Product code: (ATLQTC) This oil is also FORD MERCON ULV compatible.

 

Bob… you know we always appreciate “guinea pigs” when it comes to trying products for our trucks!

 

Transmission might be better off running higher stable temperature and getting up to temp quicker. On another application I added a thermostat to my 8 speed to keep it a consistent 160-175F, and warm up quicker.

 

Bob, you did not look in the place that Amsoil had updated, and this happens because they do not always make sure the website has been updated. You were looking at incomplete information. It happens sometimes.




Automatic Transmission Fluid
For Automatic Transmission: 10L80/MQB....ULV

Notes:	(1) The WSS-M2C949-A specification recommended was dhas all areas updatedeveloped by Ford and GM. Products meeting the specification are available under the DEXRON ULV and MERCON ULV tradenames.
Capacity:	10 speed With Cooler 10L80/MQB Total Fill 12 quarts.
Capacity:	10 speed Trans Only 10L80/MQB Total Fill 11.6 quarts.
Capacity:	8.1 quarts Initial Fill.

• 
  
  AMSOIL Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid
  Product Code: ATLPK-EA
  5.0 (45 Reviews)
  • Withstands the rigors of heavy towing, elevated temperatures and challenging terrain
  • Remains fluid in sub-zero temperatures
  • Provides reserve protection during heavy use and abuse
• Warning - Click here for Proposition 65 information for this product
  $21.69
  Retail Price (USD)
  Preferred Price:$17.09
  Save:$4.60
  Package Size
  Quart Easy-Pack Quart Bottle Gallon Jug 2.5 Gallon Jug 55 Gallon Drum 275 Gallon Tote
  UNIT OF MEASURE
  Each Case of 12
  QUANTITY
  
  
  
  
  Estimated delivery by Friday, September 13to

 

Bob, you did not look in the place that Amsoil had updated, and this happens because they do not always make sure the website has been updated. You were looking at incomplete information. It happens

Nowhere on the Amsoil site do they show a ATF that measures 4.5 cSt.

 

I called AMSOIL and they verified that this oil is ULV compatible. I understand there are individuals out there with doubts about claims and compatibilities. However, AMSOIL is on record as standing behind their products to protect the consumer, provided all proper maintenance steps were followed and compatible oils were used to protect equipment. Not sure how much more clear they can be. Perhaps we need a direct DEXRON/AMSOIL ULV comparison and confirm the results for all to see.

 

I called AMSOIL and they verified that this oil is ULV compatible. Not sure how much more clear they can be.

It's not and they are telling you a sales pitch, not a fact.

 

The facts are, GM says to use DEXRON ULV or equivalent oil for the 10L80 Transmission. Accordingly, AMSOIL's (ATLQTC) product, meets/exceeds that spec. so I don't see what the issue is.

 

Amsoil also states their thinnest fluid is 6.3 cSt, when a true ULV ATF is 4.5 cSt. Amsoil says lots of things.

Do a online search of folks using the Amsoil in place of a real ULV fluid. Many dump it out, says the shift quality and strategy goes to hell.......

Here's one, chosen at random.

"I wish I’d known that the fluid recommended by amsoil wasn’t really right for the truck "

 

A year ago, our very own Piper, set the record straight...... Another very well respected member jdwarren agrees.

The short answer. Don't use it. ( This is a full sized 2500 thread, but the info is still relevant. )

https://www.duramaxforum.com/threads/anyone-try-the-amsoil-atl-transmission-fluid-in-their-10-speed-allison-10l1000.1030381/

 

I keep telling people about experience with AMSOIL products... Yet, they still don't believe me.. [kinda like 'P' their minds are made up, sad] My cars get at least 10-15% better fuel mileage.. Run upwards of 17K-21K on oil change intervals.... Run great and quiet...

 

Nobody doubts Amsoil and their premium products they make. However; Amsoil DOES NOT make a ULV Transmission fluid that is compatible with our transmissions despite what they might claim as “should be fine”

 

The Amsoil fluid is waaaay off spec as far as viscosity, it's too thick.

Both the 10L80 and the HD 10 speed base their shift timing in part on the temperature of the fluid that, is programmed into the TCM that at X temp the fluid will have Y viscosity and then it will base the shift timing on that. That is part of the ULV spec, 4.5 cst viscosity. The Amsoil is 6.5 (it's a Dex 6 product).

The only 10 speed failures (HD's) I've seen were from a fleet using Dex6 viscosity fluids instead of the proper ULV viscosity fluids. I hate the limited options for ULV fluid but it's what I'm using in the 22.

But it's your transmission.....if staying in the big A lube family matters...have at it.

 

Does Amsoil advertise improved heat dissipation? IT has to take the heat, and get rid of it, right? You don't want your oil to be unable to pick up heat, leaving the transmission to be making heat it can't get rid of? In engines, gylocol accepts heat and gets rid of heat better and faster than water.

Is there that technology in lubes? Not just lubrocity at temperature, but durability in heat, viscosity, coating ability, but also heat transfer. What do you think?

 

In engines, gylocol accepts heat and gets rid of heat better and faster than water.

Totally untrue.
Water has a higher specific heat capacity than most other fluids , allowing it to transfer heat more efficiently when used as a coolant.
Viscosity: Water has a lower viscosity than antifreeze, which allows it to flow more quickly through radiator tubes and the tight nooks and crannies that exist in engine blocks and cylinder head castings.
Antifreeze contains glycol, which isn't a good conductor of heat.

 

Beating a Dead Horse now, but Amsoil now shows a ULV and it's in a green labeled package not the blue or red.

Don't know if I would trust it just yet. I have not seen the WSS-M2C949-A specification with the little searching I have done.