Amsoil for engine and tranny ?

Ohiozr2 · May 20, 2019

7 hours ago, 1SLOW1500 said:

Flush is good and pan drop is good I would base it on mileage and if there are trans issues you are trying to address. Issue with pan drop is the cooler and lines are blocked of and the converter holds 2 quarts also. this is why the flush is better. However the pan drop you can see if there is debris and get to the filter. If I was having issues and it was higher mileage I would do both flush till clear then drop pan and swap filter and clean it up then fill it. There is still a fill plug where a dip stick goes so it isn't hard. But truck has to be idle in neutral so the pump can move the fluid. I see people just fill and start the truck dry.

These trans are very expensive and the tcm is inside so swap with a junk yard trans isn't that simple. So the extra $90 for cheap fluid to flush is worth it.

I would rather do both, I couldn’t get either scenario to make sense in my head.

Hillwood · May 25, 2019

On 5/20/2019 at 11:11 AM, 1SLOW1500 said:

Flush is good and pan drop is good I would base it on mileage and if there are trans issues you are trying to address. Issue with pan drop is the cooler and lines are blocked of and the converter holds 2 quarts also. this is why the flush is better. However the pan drop you can see if there is debris and get to the filter. If I was having issues and it was higher mileage I would do both flush till clear then drop pan and swap filter and clean it up then fill it. There is still a fill plug where a dip stick goes so it isn't hard. But truck has to be idle in neutral so the pump can move the fluid. I see people just fill and start the truck dry.

These trans are very expensive and the tcm is inside so swap with a junk yard trans isn't that simple. So the extra $90 for cheap fluid to flush is worth it.

The 6 speed has an internal control module..

The 8 speed has an external control module..