The Parker manual doesn't specify 5606, that's why I ask. The manual specifies "ATF, OD18, or other clean hydraulic oil with a viscosity of 150-300 SUS at 38C", if another type is used "consult the factory"
The label on Phillips 5606 states that it is not to be used on natural rubber. And the MIL-SPEC viscosity is outside of the Parker manual's recommendation.
Two votes for 5606 from the List so far. Anyone have experience with another fluid?
Joe Czabaranek
Joe wrote:
I have a can of Phillips 66 X/C Aviation Hydraulic Fluid that Id like to use in my Parker 108 series hydraulic pack. MIL-PRF-5606F states that viscosity should be ~15cSt at 38C. The Parker/Olidyne spec is ~35-65cSt. So the Phillips
fluid is less viscous and is labeled not for use with natural rubber components.
Does anyone know if this fluid is suitable?
Can someone recommend an inexpensive, automotive fluid that has proven effective?
424DH
Joe,
While 5606 hydraulic oil is a bit pricey, you only need a little, and it’s not like engine oil that you need to change
periodically…although they do recommend flushing/replacing every ten years… Why take a chance with the seals, etc. It will cost you a LOT more time and aggravation to repair/correct the damage caused by non-compatible fluids than just using the specified 5606.
My two cents…
Bob