Seastar steering fluid

[DHV90]

Hi guys
What does everyone use in Seastar hydraulic helms? the oil seems hard to get hold of and can't be so special that no generic rating of hydraulic oil will replace it surely?

Thanks in advance!



Edit just did a search and found my answer, happy for this thread to be deleted, sorry

 

[Seastoke]

Where do you fill it,

 

[pks1702]

hydraulic steering - what oil?

Seems reasonably easy to locate.

Seastar Hydraulic Steering Fluid

SeaStar/BayStar Hydraulic Fluid

Hydraulic Fluid 0.946ml (1 US QUART) - Hypromarine

OIL HYDRAULIC STEERING Teleflex SeaStar

 

[superheat6k]

I use ATF. No problems and similar viscosity.

 

[Solent Sailor]

ATF is not the correct liquid.

You need ISO22 hydraulic fluid. I've recently replaced the old ATF that the previous owner had put into my system with Smith & Allan Hypower 22 fluid - £20 per 5l on eBay - plenty for a flush and refill on a 48 footer with twin helms.

 

[superheat6k]

ATF is not the correct liquid.

You need ISO22 hydraulic fluid. I've recently replaced the old ATF that the previous owner had put into my system with Smith & Allan Hypower 22 fluid - £20 per 5l on eBay - plenty for a flush and refill on a 48 footer with twin helms.

ATF is a simple hydraulic oil, anyway it works for me, as it did on my last boat.

 

[Momac]

You need ISO22 hydraulic fluid. I've recently replaced the old ATF that the previous owner had put into my system with Smith & Allan Hypower 22 fluid - £20 per 5l on eBay - plenty for a flush and refill on a 48 footer with twin helms.

Useful info should I ever need it.
I have been using Smith and Allan oils for a while - always delivered promptly and a very useful saving over the marine engine makers own branded oils.

 

[Assassin]

They are often the marine engines makers own brand as it is made in bulk and put into a different container, it is also missing the marine branding and the marine tariff applied to anything marked marine.

 

[Solent Sailor]

ATF is a simple hydraulic oil, anyway it works for me, as it did on my last boat.

ATF will work, but it is of notably higher viscosity (c. 38 in comparable terms) and your steering would be noticebaly lighter with ISO22 - mine is.

In addition, ATF (Dexron etc) is not intended for use with the seals contained in many steering systems - e.g. in autopilot pumps. Over time, this can cause degradation and leaks. Of course, the pump may well fail for other reasons before that happens (I have a poor history with these darned things!) but I do tend to try to use the correct spec of fluid for the correct job. It's not as if ISO22 is expensive.

 

[altruistica]

ATF is not the correct liquid.

You need ISO22 hydraulic fluid. I've recently replaced the old ATF that the previous owner had put into my system with Smith & Allan Hypower 22 fluid - £20 per 5l on eBay - plenty for a flush and refill on a 48 footer with twin helms.

I'm installing a hydraulic system on my 40ft cat using this kit from Vevor.
VEVOR Hydraulic Steering Kit 300HP, Hydraulic Boat Steering Kit Helm Pump, Hydraulic Boat Steering Kit Without Hydraulic Steering Hose for Boat Steering System | VEVOR UK

I've found the Hypower 22 on Ebay, now £34.50 for 5L

Pardon our interruption...

I've also found on Amazon 'Log Splitter' hydraulic oil with the same ISO22 rating for £23.

Premium Log Splitter Oil ISO 22 Hydraulic Oil VG22 5 Litre 5L : Amazon.co.uk: Automotive

Question is, is it the same stuff as Amazon don't seem to stock the Hypower 22 variant?