Adding/Removing ATF to your transmission - SailNet Community
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post #1 of 1 Old 06-28-2017 Thread Starter
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Thumbs up Adding/Removing ATF to your transmission

I had always struggled to add ATF to the transmission on my M25 with a HBW-50. The heat exchanger was mounted directly in the way, and it was a major PITA, and ATF would spill. Ideally, I wanted to fill the transmission with ATF for winter layup (keeps the seals moist), and drain it back to the operating level for the season. The drain plug was not visible, and impossible to reach, as it was set below the sump that the engine sat in.

I tried several different funnels and nozzles from the auto parts stores, but nothing worked. In the spring I would get my motor oil vacuum, and try to suck it back to the same level, but it was a major PITA to fit the damn thing within the tight confines of my engine compartment.

Last fall I found this for about $5 while shopping for motor oil at Wallmart;

I filled the transmission without spilling a drop!

This spring I put the pump pickup into the transmission and pumped the ATF out, and into a bottle. Once again, I didn't spill a drop!

Is it worth $5 - HELL YEAH!!!
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USCG Licensed OUPV Captain, US/Sailing BKB and ASA 101/103/104/105/106/114/118 Instructor - Also ABYC certified in Marine Electrical Systems,

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Last edited by eherlihy; 06-28-2017 at 02:11 PM.
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