Long-term Experience with Valvoline MaxLife Multi-Vehicle ATF in 4R70W, Anyone?

Just did the same drive back, with a bit more in-town driving. Starting temperature was 130°F.

This is my temperature at arrival. I'm impressed. I bet the new filter may also be a contributing factor.

Screenshot_20240203_145554.jpg
 
With your trans i such good condition, I would suggest getting a jmod done to it, and a new 12- piston, just to prevent future issues. And add a cooler.
 
This was always a curiosity, just not curious enough to actually do it. Thanks for the pics though. Can you cut open an oil filler next? 😂
 
On Sunday, I did a longer drive of about 220 miles roundtrip.

This is where temperature maxed out around 70 mph on the way home. On the way down, it was a few degrees lower. When speeds went down to 50-60 mph toward the end of my drive home, temperature settled in the mid-160°.

Screenshot_20240204_175024.jpg

With my old fluid and filter, long drives always produced temperatures of 180-190°. Granted, those readings may have been during higher ambient temperatures, so final verdict may have to wait till the summer. Still this is very positive.
 
Martin,

What are using again for your temperature reading>

Joe
 
Resurrecting this thread 2+ years later, as I just did my 2nd drain and fill using Maxlife, 32,000 miles after the last time.

Don't judge, but the pan did not come down! Reason being, last time I cut open the filter, and there was nothing; plus the old fluid had no floating matter at all; plus I just didn't feel like it. I think I'm settling for doing a filter change at every other fluid change.

What I got out:
  • 3 Quarts siphoned from the pan. That's a bit less than I expected (last time was closer to 4 Quarts), but I have been very conscientious not to overfill lately.
  • 6.5 Quarts from the torque converter. That's slightly less (last time was 7 Quarts). I did the drain first thing in the morning, and the engine hadn't run at all; some fluid might have drained from the torque converter into the transmission (?).
So 9.5 Quarts total. I did not flush the cooler because those lines are tedious to disconnect. This was more of a partial fluid change then...


As to the fluid itself, I just have no observation other than that it's working just fine. I do have some consistent moisture from the bellhousing now, but I attribute that to general aging rather than the fluid.


As last time...I can't help but obsessing over the torque converter drain plug. Last time I used a torque wrench to 10 lb-ft (conflicting manual sources stipulated between 7 and 20 lb-ft). This time, I trusted my feeling. Oh oh. Reusing the same plug, it didn't go quite as far in. (I definitely did not cross thread it!)

Last time:
VideoCapture_20240203-112646.jpg

This time:
VideoCapture_20260407-172536.jpg

That concerns me a little because...will it still seal the NPT way if it's less deeply inserted? I will monitor for leaks. I can always give it another quarter turn...but my feeling said Stop!
 
As long as it’s not leaking it’s fine. The variance might just be how much inertia you put into the torque wrench, they’re usually not that accurate at the low ranges anyway.
 

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