Handy Don 15,694 #26 Posted 19 hours ago At the plant I worked in during college vacations, there were a lot of hydraulic systems operating fixed production equipment. The maintenance department had a water centrifugal water separator thing that rode on the back of one of their Coleman tool carts. It hooked it up to valved T nipples at the inlet and outlet of the reservoir and circulated the fluid while extracting any water. They’d cycle all the cylinders, too. Lastly, they’d top up for any lost volume and on to the next system... Share this post Link to post Share on other sites
bo dawg 553 #27 Posted 4 hours ago On 1/28/2026 at 8:51 AM, WHX?? said: I don't run sunnys in the winters but bet they would be slow with 10w and slow to warm up. I wouldn't be beyond just trying ATF in a Eaton 1100 but back to @squonk ies issue on how to get the recommended 10w-30 out? Or get the ATF back out if it doesn't pan out and performance is poor and you want to switch back. could you rinse out with kerosene before switching oils? Or would that mess things up? My very first hydro years ago had ATF in it, I just drained it out and put 10w30 in it, seemed to do just find. Share this post Link to post Share on other sites
Ed Kennell 44,392 #28 Posted 4 hours ago 1 minute ago, bo dawg said: could you rinse out with kerosene before switching oils? Yes, that is exactly what you should do. After the kerosene or diesel flush, I also filled with elcheapo oil, ran it for a couple hours and then drained and filled with good oil. 1 Share this post Link to post Share on other sites
