Mark, Though I’ve used old fluid before, Dr. Hsu is right on this one. At least according to AC Spruce; https://www.aircraftspruce.com/catalog/lgpages/hydfluid5606qt_09-27000.php
>>Q: What is the shelf life for P/N: 09-27000 HYDRAULIC FLUID MIL-H-5606A? >>This product has a 3 year shelf life. John Bouyea / OR81/ Hillsboro, OR N133RM KR-2S – imported, fixed & flying www.bouyea.net/N133RM On Behalf Of Dr. Feng Hsu via KRnet Subject: Re: KRnet> Brake Fluid …I'd choose to buy a brand new gallon or bottle of ave fluid instead Dr. Hsu mark jones via KRnet <krnet@list.krnet.org> wrote: Does aviation brake fluid have a long shelf life? I have some that must be at least ten years old. Is it safe to use?
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