MIL-H-5606 Properties MIL-H-5606 Properties pmbov (Mechanical) (OP) 27 Feb 18 16:43 Hello all, I am trying to find a good reference for the fluid properties of MIL-H-5606 oil. This MIL spec is used for test data of flow through a filter. Can anyone help? Thank you in advance. -Paul RE: MIL-H-5606 Properties monkeydog (Aerospace) 27 Feb 18 18:49 When I look at the specification for MIL-H-5606 it provides the fluid properties. RE: MIL-H-5606 Properties pmbov (Mechanical) (OP) 27 Feb 18 18:53 Is there a difference between 5606A and 5606? I also don't have a copy of the MIL Spec and can't seem to find it on the web. RE: MIL-H-5606 Properties romke (Automotive) 27 Feb 18 19:22 The MIL-5606 spec has been superseded by MIL-PRF-5606. If you only need basic data for filter tests you may find them in this booklet: https://www.shell.com/business-customers/aviation/... Basically MIL-PRF-5606 is a low viscosity mineral oil based hydraulic oil with extra cleanliness requirements. RE: MIL-H-5606 Properties pmbov (Mechanical) (OP) 27 Feb 18 20:31 Thank you! This is perfect!