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1975 G.M.C. Automatic T.h350. Trans fluid disapears. Trans.

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Hi 1975 G.M.C. Automatic...
Hi 1975 G.M.C. Automatic T.h350. Trans fluid disapears. Trans. Has been rebuilt no leaks on outside, modulator valve not leaking, cooler lines and rad.ok speedometer cable fine, front and rear seals dry.
where can the oil go . Used two liter of fluid in twenty miles
Submitted: 2 years ago.Category: GMC
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8/31/2015
GMC Mechanic: Virtual Wrench, Master Mechanic replied 2 years ago
Virtual Wrench
Virtual Wrench, Master Mechanic
Category: GMC
Satisfied Customers: 14,620
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Did you check the level with the engine running

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GMC Mechanic: Virtual Wrench, Master Mechanic replied 2 years ago

Ok, well we both know it cant just dissapear and if its not leaking externally, AND there is no tranny fluid in the coolant, then it has to have been not filled all the way. I mean its just impossible to dissapear...are you sure there is no tranny fluid in the radiator. It will be real obvious if you take the cap off the radiator???

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GMC Mechanic: Virtual Wrench, Master Mechanic replied 2 years ago

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