I have a HST with a block style heater which works just fine. I would imagine someone has come up with a way to use engine coolant to heat hydro fluid.
It was -30f here last night. I used my 7610hst with a boom and manual grapple to grab a few sticks to buck up 'cause they said it would be gettin' cold this week. I run thin oil. 0-40 esso in the engine, tho it don't pour as well when it's real cold as straight 10w motor oil (never could figure that one) and I do have to plug it in if it's less than 0 f, just a block heater. The hydro trans gets essotrans extra, which is about as thin as straight mineral oil, and it dosn't make any noise. That noise is just pump cavitation, the sound of air being seperated from the oil 'cause it's too thick to move. Little sonic booms are occuring causing small pits to be blasted off the facing on your pump and circulate in the oil. If you make your pride and joy do this, it better be desperate times. If you do this every day you likely won't last the winter. Extremely hard on the pump. To keep the trans warmer, mount some cardboard or tarp to the sides of the engine compt. to blow that warm air back around you and your tranny, a little haywire will go a long way. Even go right over the hood with it, but keep it away from the muffler, you don`t want carbon monoxide blowing back at you, and keep it away from the tires. If you are warm you can enjoy your chores. ps It did get cold -40 this am with a light breeze making it close to -50.
it takes 5 minutes to install. I glued it right to the side of the HST unit.
I also added a 250 watt to the bottom of the oil pan and another 500 watt to the rear 3 point mounted 20 gallon hydraulic tank i use for my loader mounted snowblower. There on a wall mounted timer. Cycle for a few hours before i need to use them
Work G R E A T. fairly cheep insurance and no groans from my tractor at all.
Nice call on the glue on, we use them on the equipment that needs a little extra heat. Probably way more effecient than the water heater for the engine, just glue to the oil pan. You are right on the insurance thing.
My JD110TLB is a hydro tranny. My JD5075M is a hybrid-hydro with the Powereverser (F/R) that is hydro.
JD makes a heater element that fits into the transmission sump filter housing. Looks like an in-block engine heater. With the Lo-Vis hyd fluid and 3-4 hours it'll go. Always go slow for the first 15-20 minutes of working the tractor and it'll be OK.
Might be that Mahindra has transmission heaters as well.
Alaska is not "eqiupment friendly" and this winter has been especially hard - with so many days of back to back below zero temps!
All my equipment runs on synthetic oil, too. But, after sitting for 6-7 days @ minus 35F or in "BareFlanks" at minus 55F even synthetic gets thicker.