I use full synthetic in my cars just because...
But, for the F250... maybe there is a reason why Ford/Motorcraft sells blended oil, not full synthetic? I don't think cost is the reason, since it isn't their cost.
Later: I found out at Walmart the Castrol Universal ATF and bought it. Better specs for my application.
https://www.walmart.com/ip/Castrol-Transmax-ATF-CVT-Universal-Automatic-Transmission-Fluid-1-Gallon/641751153
Data sheet says only 5.9 cSt at 100°C and 28 cSt at 40°C. Lower than what normal, non-LV, ATF fluids had.
I am tempted to use it in Hyundai and Kia that require ATF SP-III where I previously used with great results Castrol Import Multi-vehicle with 7.4 cSt and 35 cSt respectively...
Another...
First off I was talking about Castrol, not the sh**show that Toyota WS is. That fluid is LV, but is not synthetic. Lots of modifiers. Oxidizes in no time.
And that 5.18 cSt result you call "they shear out at 30k miles and the end up lower than synthetic LV"? I don't know what the Toyota WS...
Those AISIN transmissions were originally designed for T4. WS is "working", but IMO that's just because the original pumps had enough head capacity to drop from.
The pump pressure regulator takes care of maintaining the right pressure if it tends to be too high, by dumping more fluid back in the...
Castrol® Transmax™ DEX/MERC meets MERCON requirements.
Here is the datasheet: https://msdspds.castrol.com/bpglis/FusionPDS.nsf/Files/68D5435223A1FD148025814500665523/$File/BPXE-ANM933.pdf
The AWD in my Explorer didn't use friction packs, it was a true differential with a sealed Vascous Coupler...
Bad choice. Mercon V was a normal viscosity fluid, like Mercon.
Now you are planning to get LV fluid... I guess you care more about gas mileage (0.5mpg or so ) than the life of that TC.
Next thing you know you are posting here upset that "Ford TC are crap, they fail"....
I have junked a Ford...
Originally those were Mercon V. Then, for fuel economy, they dropped the viscosity requirement to LV.
You saw the results...
Now what you want more? 1/2 or 1 extra MPG or longevity of the truck?
Valvoline CVT has a KV100 of 5.6
Castrol CVT has a KV100 of 7.1
Idemitsu (Genuine NS3) has a KV100 of 6.23:
http://www.findmymsds.com/nissan/pdfs/99998-CVTNS3-E.PDF
Note the KV40 of 23.
In hot climates I would go for the higher KV100. Especially on Nissan hot transmissions.
Well... that's a Nissan CVT so there's nothing you can do about that. Except trade it in.
https://ricksfreeautorepairadvice.com/nissan-cvt-problems-continue/
http://www.lemonlawcase.com/problem-vehicles/nissan-cvt-problems/
Personally I trust Castrol, I had good results with their fluids...
In my mind, the manufacturer country is where the HQ and CEO is located and where most of the profits are going back.
Not where the slaves are working to build the tincans.
I remember that my Explorer had the recall done, where they have added a fused harness on that circuit. I wasn't even the original owner, they got it in for annual inspection and just added that free of charge.