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Some of this might seem a bit obvious, but here goes. After the machine is thoroughly warmed up (and pressurized with the cap sealed), very thoroughly inspect all of the radiator hose connections. See if you see water seeping out of any of them, use a flashlight if necessary. Also, look at the middle of the hoses too, sometimes pinholes can occur there as well (although less likely). Try and look down on the stump pan to see if water is collecting down there. My loader has an oil cooler on the lower side of the block which has coolant circulating through it. If yours is similar inspect that area too. You may have to remove the stump pan to get a good look. Also check the freeze plugs and temp sensor junction and make sure they're not leaking. Spending a little time under the crawler after its warmed up and hot while it's idling (and in neutral with brakes on obviously) may give clues as to where the water is going. Inspect the radiator closely and see if water is squirting out or dribbling down the front or rear. Inspect the water pump shaft/seal area and ensure no water is coming from a blown seal/bearing. Try wiggling the waterpump shaft too to see if it's loose (you may have to loosen the belt to properly test). Take a close look at the exhaust and see if you detect steam coming out. If it's consuming several gallons of water in just a few hours, you can probably see it. Try putting a cool piece of sheet metal over the exhaust (without blocking it), or maybe even a piece of glass (using gloves) and see if excess condensation forms over the surface while it's running. if its humid out, its normal to see some condensate. But if its dry out (like it is in the winter/early spring) you shouldn't see that much. Look at the exhaust manifold/muffler junction area for water dribbling out or evidence of steam. Also, with the machine hot and with the radiator cap off (let it warm up without the cap on), advance the throttle and watch what happens. Watch for bubbles coming up to the surface, which might indicate exhaust gases percolating up through the system. If your motor oil seems fine, then it's probably not getting in the oil. But if there are no leaks anywhere, then its got to be getting into the combustion chamber(s), meaning of course the head gasket is starting to go, or possibly a crack in the head/block. Was enough antifreeze used in it over the winter? And does the 955 use engine coolant to cool the transmission/converter oil? If so, I would check the tranny oil cooler and the transmission oil too and make sure no milky-ness or water is observed there either. good luck
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