Not really. They just needed slightly better cold flow that synthetics have had for 20+ years. At operating temp, most transmissions won't notice 1cst. And, Maxlife was already FM'd enough to provide the smoothness required by the newer AT programming.
Routine ATF change...from Dex VI to Maxlife
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Originally Posted By: Jakegday
Originally Posted By: AzFireGuy79
Here is the problem with blaming any issue on ATF alone in your situation. You are doing drain and fills, meaning more then half Of the old fluid give or take is still in The transmission, effectively diluting the new stuff whether its Dex III or VI . To get a good idea of any fluids performance, you have to do a cooler line flush or several drains. The improved shift quality provided by the maxlife is likely to be short lived. Dex VI is a much better fluid.
really, 50%? thats a little sarcastic, dont you think?? according to my FSM, my grand prix holds 10.1 quarts. a pan drop will release 7.8 quarts. according to a haynes manual, i dont remember the exact numbers, but my fairmont loses about 75% with a pan drop...
i think between 70-80% would be a more accurate figure
99 expedition 26 plate R100 holds almost 20 qts (inc cooler) of which only 6.5 qts are removed with a pan drop,not even close to 50%.
It depends on the unit,50% IMO is a fair +- average
Originally Posted By: AzFireGuy79
Here is the problem with blaming any issue on ATF alone in your situation. You are doing drain and fills, meaning more then half Of the old fluid give or take is still in The transmission, effectively diluting the new stuff whether its Dex III or VI . To get a good idea of any fluids performance, you have to do a cooler line flush or several drains. The improved shift quality provided by the maxlife is likely to be short lived. Dex VI is a much better fluid.
really, 50%? thats a little sarcastic, dont you think?? according to my FSM, my grand prix holds 10.1 quarts. a pan drop will release 7.8 quarts. according to a haynes manual, i dont remember the exact numbers, but my fairmont loses about 75% with a pan drop...
i think between 70-80% would be a more accurate figure
99 expedition 26 plate R100 holds almost 20 qts (inc cooler) of which only 6.5 qts are removed with a pan drop,not even close to 50%.
It depends on the unit,50% IMO is a fair +- average
none of our 4L80E's or 4L65E's will give up more than 4 or 5 quarts max from a pan drop.
I wouldn't trust a Haynes manual any farther than you could throw one. I have found errors in every one I ever purchased.
And Trav is right, most trans won't really notice a small variation in viscosity. All the ones I am familiar with regulate the fluid pressure very precisely.
I wouldn't trust a Haynes manual any farther than you could throw one. I have found errors in every one I ever purchased.
And Trav is right, most trans won't really notice a small variation in viscosity. All the ones I am familiar with regulate the fluid pressure very precisely.
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