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Quart (Can) Case (24 Quarts) Gallon (Can) Case of 6 - 1 Gallon Cans 55 Gallon (Drum)
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Mineral oil based "super clean" hydraulic fluid for use with brake and hydraulic systems with synthetic rubber seals. Meets specifications MIL-PRF-5606H. Colored red.

Note: Containers are cans and are non-resealable.

For reduced pricing on large volume orders, please contact sales.


  • Meets MIL-H-5606G and and MIL-PRF-5606H cleanliness requirements for aviation hydraulic oils
  • Superior low temperature properties
  • Compatibility with synthetic rubber components
  • Dyed red for easy identification
  • Good anti-wear properties


Got this to replace SeaStar steering fluid. It is better and cheaper. It was packed well and arrived quickly. It is in a sealed Tin Can. So, unless you plan to use it all at once, find a few clean bottles to put the balance into for future use.

William L
March 3, 2021

It did the job

Stephen W
January 21, 2021

I bought this hudraulic fluid because of its availability. Aircraft Spruce had it in stock and shipped promptly. Works great in my Aero Commander which is all hydraulic brakes, gear, flaps, nose stearing.

David S
December 3, 2020

Excellent service and quality product. Easy transaction with prompt delivery. Thank you

November 25, 2020

Best prices, fast shipping. Will do business again

June 29, 2020

good service

Wayne C
May 1, 2020

Great online shopping. Fast delivery. Excellent communication. Price for 2 with shipping, still much better than one of the competition.

Orrie T
April 23, 2020

Thanks for sending the product and it arrived right on time.

Howard E
November 21, 2019

Good price. I ordered two quarts. Glad I did because one quart can was punctured and caved in. Small leak all over inside of box. Salvaged about 3/4 though.

October 28, 2019

You always have what I am looking for.

Dan L
September 3, 2019


Q: Is a manufacturing certificate of conformance (C of C) available for this Aersohell 41 Hydraulic Fluid?

No, there is no C of C available. The only certification that is available is the manufacturers Certificate of Analysis (C of A). It must be requested at the time of order via the "Special Instructions" box.

Q: Would it be possible for you to issue COC if we pay the charge?

There is NO Certificate of Conformance available for this product. Only Certificate of Analysis can be obtained and must be requested at time of order.

Q: Can this be used as brake fluid on an FAA certified aircraft or an experimental? It looks like transmission oil in the reservoir now. I was told by one A&P that it is hydraulic oil. Not brake fluid as in DOT 3, 4, or 5 in a car.

This is Aeroshell 41 fluid, and meets Mil-5606H requirements, which is the most commonly used hydraulic fluid used in GA brake systems. Refer to your aircraft maintenance manual to verify the fluid the OEM recommends.

Q: Is Aeroshell 41 Hydraulic Fluid considered Hazmat for shipping?

No, this material is not considered hazardous.

Q: Is there a published shelf life for this Aeroshell 41 fluid?

The Aeroshell re-test time is 3 years for the Aeroshell 41 fluid.

Q: What is the H designation in the MIL spec? I am looking for MIL-PRF-5606.....is this the same?

The H is the specification revision. H is the most current revision.

Q: What is the difference between 5606 H and 5606 A?

The H will mean rev. H and the A means that it has been opened and caned down to a smaller container.

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