Great outfit, been buying Phillips 5606 fluid from PSC for years, and other stuff too.
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Re: Hynautic Mil spec 5606 alternative
CRICKET
1966 HAT50C101
Purchased 1985 12v71Ns
Repowered 1989 with 8v92TI
Repowered 2001 with 3406E
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05-29-2020 10:37 PM #12Senior Member
- Join Date
- Jun 2007
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Re: Hynautic Mil spec 5606 alternative
Another option: https://petroleumservicecompany.com/...AL_BLU_PDS.pdf
Kendall®Hyken Glacial Blu Hydraulic Fluid is a high-quality, low-viscosity antiwear hydraulic oil specially developed for use inindustrial and mobile equipment operating at extremely lowtemperatures. It has a very high viscosity index and a low pourpoint for use in arctic conditions.
Hyken Glacial Blu Hydraulic Fluid may be used in land-basedhydraulic systems where the equipment manufacturer specifies aMIL-H-5606 fluid. It is notrecommended for aircraft use.
And this chart says ISO VG 15 is similar to 5606 https://petroleumservicecompany.com/...full-CHART.pdfFTFD... i drive a slow 1968 41c381
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05-30-2020 06:18 AM #13
Re: Hynautic Mil spec 5606 alternative
Another alternative is Mobil DTE 25, Hydraulic, ISO 46, 5 gal. You can order from Zoro.com. It is also certified for the Niaid Stabilizers, Marquipt Davit, Hydraulic steering on Tender, etc, etc....
Best regards,
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David
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Re: Hynautic Mil spec 5606 alternative
That’s ATF and that cold weather stuff is an old HOF tale that keeps being repeated. I’ve had ATF in mine since it left the factory. Except when I blew a line 74 miles offshore and filled it with 30w engine oil because I didn’t have anything else. I’ve run the boat in December in the NE temps in the 20’s and never noticed any difference. I just rebuilt the bridge helm after 53 years of hard no autopilot running. I think the ATF has additives that keep the seals soft.
"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