Heli-Hound Posted December 14, 2010 Report Share Posted December 14, 2010 Just wondering if anyone has any info on weather or not you can mix Aeroshell 41 hydrualic fluid, with Royco 756? they are both Mil spec Mil-PRF-5606H and NATO H-515 certified, but can you directly mix them, or do you need to flush the system before switching between the two manufacturers? Our stores Dept, ordered more HYd fluid, was supposed to be Aeroshell 41 and we got sent the royco, just wondering if we can use it or have to send it back. thanks. Quote Link to comment Share on other sites More sharing options...
ray Posted December 15, 2010 Report Share Posted December 15, 2010 You don't mix fluids, even if they have the same MIL-Spec. Flush one out, then fill the other. Quote Link to comment Share on other sites More sharing options...
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