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Old 11-03-2020, 07:34 AM   #7
Seevee
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City: st pete
Vessel Model: 430 Mainship
Join Date: Sep 2016
Posts: 3,498
I could argue to use aero hydraulic fluid, but that's really a misnomer.


ANY hydraulic fluid with the same MIL spec, is the SAME... there is no "purest" just because it has an aviation label on it. Chevron, Phillips, Shell... all the same. Now there are different dash numbers. Started as 5606, then 5606A, etc., believe the latest is 5606G, however, very little difference and all will work in our boats.



Now, for some reason the aviation suppliers sell it fairly cheap... and not hard to find it in the $25 a gallon range, or where Ted gets it at Aircraft Spruce. If you google it, there are other suppliers.


And occasionally, you may find a local oil distributor that will sell it (and other oil products) very reasonable, especially in bulk.
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