Transmission Questions

There are several ways to differentiate between a 1:1 and a 1.23, the tag on the tranny and the presence (or lack of) the aft reduction housing are 2 big ones.

On the fluid, red is good, but pink is bad. Pink (strawberry milkshake) indicates the presence of water, which these PCM's do not handle well. Absolutely NO on the synthetic. Stick with conventional ATF, either Dex/Merc or Dex III. Avoid high mileage formulations. You'll need to flush the fluid several times to get all the water out. Buy 5+ qts.

Dextron III is an automatic transmission fluid. They now have up to Dex V or VI - stick with Dex III.

A suction pump is the best way to change the fluid out. Get a 1 foot length of 1/8 copper tubing to get down to the bottom of the case. There is only a small hole for access in the dipstick port.

I takes just shy of 2 quarts for a full change.

Anyone?

Great thanks.

It only took about 1.5 quarts. I have the boat leveled on the trailer when I am checking the fluid level. After adding 1.5 quarts I am just above the full mark on the dipstick.

I have not started the motor since refilling the transmission.

Ill throw her on the hose this week and see if the level drops at all.

Thanks.

I'll run it on the hose for a few minutes until she's all warmed up, then shut her down and quickly check the level.

First time I've ever changed the trans fluid.

SNobsessed wrote: You need to put into Fwd & Rev a few times before shutting it off. That fills all the cavities. I suggest wetting down the cutlass bushing if you do this on trailer.

OK, I wasn't sure if I needed to put it in gear or not. I'll have the wife hold a second hose on the cutlass as I engage the trans.