Originally Posted by Fifty150
Originally Posted by SirTanon
Originally Posted by Fifty150
Originally Posted by ssamaroo01
VeryNoisyPoet
I think a big reason for the drawn out decay of wear metals is that a drain and fill only removed about half of the transmissions capacity.
Most people would drain the transmission from the drain plug, then fill it. I wonder how many 6F35 owners are actually draining and filling 3 times.
I don't. It's not necessary if you do it at 30,000 mile intervals. Mathematically, if you do a single drain & fill every 30,000 miles, then the "average age" of the fluid will never exceed 60,000 miles. Besides that, one of the major reasons for doing drain & fills at 30,000 mile intervals is to keep wear metals/particulates from building up.
Doing 3 drain & fills to "get all the old stuff out" is just a waste at 30k intervals.
Interesting perspective. I am more comfortable with following the recommended service procedure of a triple drain & fill. Makes more sense to me, to have completely fresh fluid, instead of just "freshened up" fluid. I am a little less comfortable with maintaining a mixture of contaminated fluid.
I agree with Fifty150, son has a 2013 Kuga (Escape) with this tranny.
According to Amsoil, total fill is 9 qts. and each D&F is 4.2. Here is your replacement ratio per D/F:
1. 46.67%
2. 71.56%
3. 84.83%
4. 91.91%
5. 95.68%
6. 97.70%
7. 98.77%
8. 99.35%
9. 99.65%
10. 99.81%
Originally Posted by SirTanon
Originally Posted by Fifty150
Originally Posted by ssamaroo01
VeryNoisyPoet
I think a big reason for the drawn out decay of wear metals is that a drain and fill only removed about half of the transmissions capacity.
Most people would drain the transmission from the drain plug, then fill it. I wonder how many 6F35 owners are actually draining and filling 3 times.
I don't. It's not necessary if you do it at 30,000 mile intervals. Mathematically, if you do a single drain & fill every 30,000 miles, then the "average age" of the fluid will never exceed 60,000 miles. Besides that, one of the major reasons for doing drain & fills at 30,000 mile intervals is to keep wear metals/particulates from building up.
Doing 3 drain & fills to "get all the old stuff out" is just a waste at 30k intervals.
Interesting perspective. I am more comfortable with following the recommended service procedure of a triple drain & fill. Makes more sense to me, to have completely fresh fluid, instead of just "freshened up" fluid. I am a little less comfortable with maintaining a mixture of contaminated fluid.
I agree with Fifty150, son has a 2013 Kuga (Escape) with this tranny.
According to Amsoil, total fill is 9 qts. and each D&F is 4.2. Here is your replacement ratio per D/F:
1. 46.67%
2. 71.56%
3. 84.83%
4. 91.91%
5. 95.68%
6. 97.70%
7. 98.77%
8. 99.35%
9. 99.65%
10. 99.81%