Transmission whine

[Richard RV]

That's true. But if you are using this procedure ONLY to calibrate the dipstick, it makes no difference what temperature the fluid is when you do it. After establishing where the fluid level is supposed to be on the dipstick, THEN you can start up the engine, warm things up, and check the level with the newly calibrated dipstick in order to fill it to the proper level.

Okay Carl, just clarifying. An excess of ATF will come out when cold, but the level is the level. Just make sure to start up the coach and run it to temperature then add the required fluid before taking a trip. I've never done it that way because I know I'd forget.

Has anyone made a second mark on the dipstick at the higher ATF level after the coach has been sitting for a long while?

 

[pvfjr]

Has anyone made a second mark on the dipstick at the higher ATF level after the coach has been sitting for a long while?

I'm not aware of anyone figuring that out. I think it begs the question, "How long is long enough to reach a static level?" I'm not really sure how long it takes for things to slowly drain back down into the pan. I'm sure there's a wide variety of estimates out there.

 

[Richard RV]

I'm not aware of anyone figuring that out. I think it begs the question, "How long is long enough to reach a static level?" I'm not really sure how long it takes for things to slowly drain back down into the pan. I'm sure there's a wide variety of estimates out there.

Yeah, it's not going to be straight line, temperature dependent, etc, etc.

I'm old school. I miss the sight glasses like on old steam boilers.

 

[tmsnyder]

Update:
I finally got the donor final drive installed. It is silent! I've never heard my GMC's engine on the highway like this before! It's very nice

Great! I'm glad my old final drive was useful to you and thank you for getting it off my garage floor.