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The exchanger is bolted right to the driver's side of the transmission. Would I go as far as to call it a heater? No. Does it aid in warming up the ATF to reduce friction as quickly as possible? Yes. What's the internals to it? No idea. Never cut one open. However, it's primary role is maintaining transmission temperatures once up to temp. No different than an oil to water exchanger for an engine oil cooler setup like GM uses on say 2010-2024 Camaro with V8, or 6.6 Duramax. Gas 10L80s (so 1500 truck with gas V8) have a thermostat in the valve body but not the cooler lines. 2019-current. 3.0 Duramax with 10L80 don't have a thermostat in the valve body. They have one in the lines going to the auxiliary cooler. 2020-current. -
By Black02Silverado · Posted
Dawn also works well. I also use Simple Green. -
So you are saying that there is a water to oil transmission fluid "heater" along with an air to atf heat exchanger? Where do I get hold of a diagram/microfiche of that routing? Is the water to oil cooler a bar plate job between the trans thermostat and the air to oil cooler? In the 2022 10L80/90? valve body there is a valve called the Cooler Thermostat Valve that gets modded to eliminate regulation to the flow to the cooler. There are two styles - the 2022 has no brass thermostat, but later versions seem to have it. Testing today after the valve body kit install, zero change in gauge temp unloaded - 180F at 84*F unloaded, so the atf heater is doing its job. The positive so far is the lag in shifting from R to D has been eliminated. There is a brass "thermostat" in the Cooler Thermostat Valve that is removed with the NextGen kit for the 10L1000 - 135F gauge temp with a 5000lb boat in small rolling hills at 85*F. -
By asilverblazer · Posted
Wonder what happened to the "MEGA"max 8.3 rumors. I haven't had any rust issues, but the wax sure is ugly. Good to hear, considering the joint venture with International ended. -
I still use kerosene and a brush for clean up since it's easily available to me. Then pressure wash if possible. Seems like on the really thick goo, brake clean doesn't work so well, at least for me. have also used simple green or similar on light coatings of oil/dirt. Again brushing it and agitating
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