5606/?

[cessnadriver]

Hello.
My 2 cents about MIL-H-5605. I also research this. Here is what I found. According to a hydraulic fluid expert:
MIL-H-83282 can be mixed with 5606 to improve the flame resistance BUT it can only contain not more 50%. The new hydraulic (83282) CAN NOT be used straight in older aircraft due to incompatibility of the O-rings. The reason I searched this out because I bought about 20 gallons of the new fluid to flush out my Skymaster thinking I could use straight 83282 after flushing. but found out after purchasing the new stuff I COULD NOT!
BILLS