TYPE-A steering fluid

[Ed Tanzer]

Getting spare fluids...1975 Hatteras 53 steering pump calls for Type A transmission fluid...
is this now the Dextron type?
tnx et
MV JJ Flygirl
Lighthouse Point

 

[MikeP]

Yes, Dexron.

However, if the boat has the original Hynautic steering, the proper fill is hydraulic fluid 5606 OR "Hynautic" brand fluid. Hynautic is 4x the price of 5606 - Hynautic figured out they could make money by rebranding/selling hydraulic fluid. Though not available everywhere like ATF, 5606 can be purchased at any aircraft-type shop or on line. I bought a gallon when we bought the boat in 2004 , flushed/filled the system and still have the same (roughly) half gallon that was left from the flush/fill.

By 1980, Hynautic was stating that ATF was suitable IF 5606 was not available. ATF will work but the steering is stiffer with ATF than with 5606.

 

[Robby]

Google Aircraft Spruce and Specility.Check the cataloge they will ups it to your door.Mil-5606

 

[Ed Tanzer]

Google Aircraft Spruce and Specility.Check the cataloge they will ups it to your door.Mil-5606

Thanks Robby, will do that....
et