I am looking to purge and replace the fluid in my steering system. From what I have read the correct fluid is Hynautic fluid MIL-H-5606 spec. Does anyone know where to purchase this online?
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Thread: Hynatic steering fluid
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11-17-2021 09:06 AM #1Senior Member
- Join Date
- Sep 2013
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- 165
Hynatic steering fluid
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Re: Hynatic steering fluid
"DON'T BELIEVE ANYTHING YOU READ OR HEAR AND ONLY HALF OF WHAT YOU SEE" - BEN FRANKLIN
Endless Summer
1967 50c 12/71n DDA 525hp
ex Miss Betsy
owners:
Howard P. Miller 1967-1974
Richard F Hull 1974-1976
Robert J. & R.Scott Smith 1976-present
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Re: Hynatic steering fluid
Just FYI early systems used ATF that’s what’s in mine. It’s an inter web myth that ATF makes the steering harder to turn.
"DON'T BELIEVE ANYTHING YOU READ OR HEAR AND ONLY HALF OF WHAT YOU SEE" - BEN FRANKLIN
Endless Summer
1967 50c 12/71n DDA 525hp
ex Miss Betsy
owners:
Howard P. Miller 1967-1974
Richard F Hull 1974-1976
Robert J. & R.Scott Smith 1976-present
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Re: Hynatic steering fluid
Support Sam's and this site.
Buy the fluid from Sam's.
In stock.Tim
1979 53' MY Hull #566
KNOW PRESSURE
Hampton, Virginia
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11-17-2021 12:49 PM #5
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Re: Hynatic steering fluid
Hey...that's where I found the specialty 8" bulb for my old spotlight. The 28v aircraft bulb was as close to 32v as I could get. https://www.aircraftspruce.com/searc...landing%20bulb
At the mouth of the Caloosahatchee
1984 52C
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Re: Hynatic steering fluid
Hard to beat the factory fluid. Check a store near you.
https://www.westmarine.com/buy/seastar-solutions--hynautic-fluid-for-engine-controls-1-gallon--14660948?recordNum=2
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Re: Hynatic steering fluid
That's glycol for the engine contols. The OP asked for steering hydraulic fluid.
Here is the West Marine link for the steering fluid
https://www.westmarine.com/buy/seast...61?recordNum=5
But why pay $100/gallon when you can get the aviation fluid (which is the same stuff) for $65??Last edited by SKYCHENEY; 11-17-2021 at 08:09 PM.
Sky Cheney
1985 53EDMY, Hull #CN759, "Rebecca"
ELYC on White Lake--Montague, MI
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11-17-2021 11:35 PM #9
Re: Hynatic steering fluid
It's $35 a gallon. If the system leaks, it helps to be red. My wife once said, 'why is the boat bleeding?' Upper helm seal blew.
Mal
Miss Molly
'85 53ED #750
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Re: Hynatic steering fluid
Someone used ATF in ours prior to our purchase. I swapped it out and things were MUCH better. Use the correct fluid!
Regards
Dan