Ford 771 front loader

[Blasterfool8]

Hi I have a ford 771 front loader on a ford 3000. I was wondering why sometimes when the lift cylinder reach full height it seems like water shoots out of both lift cylinders, the lift cylinders are single acting if that helps any. The hydraulics seem to work alot faster when the engine is warming up, which i think means there water contaminated and after it warms up all the fluid is mixed. I rebuilt the lift cylinders already once.
Thanks Ben