With Dexron III getting into the $7 a quart at the parts stores that makes TES 295 fluids seem to beva better deal. My Hyd system takes something like 18 gallons. If I have to add or change I'll just use TES 295 listed fluid.
2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft
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RV'ing since 1957, NRA Benefactor Life, towing '14 Jeep JKU Dragon Edition