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1959 Hydramatic fill level


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Hi there, if anyone can help me out I would be greatly appreciative. I am forever filling my hydramatic in my 1959 Catalina to the proper fill level, while its warm and running. However over a week or so I have a fair amount leak out the dust cover and I will again need to top it up. Its not major and has been doing it for the 3 years that I have had it. But what I have been trying to find out before I even contemplate purchasing a seal kit, is what my dipstick length should be and I can not find this info out anywhere  ( I live in Australia, so it is a challenge sourcing info). The engine was apparently rebuilt and the filler tube looks brand new, so I just want to first make sure I am using the correct tube/ dipstick. Once the fluid gets down to below the dipstick it stops leaking and shifts as normal. But I am too afraid to run it like that in case I am burning out the tranny, so I fill it back up. Does anyone know the length of the filler tube and or dipstick for a 59 hydramatic? Thanks in advance.

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1 hour ago, Luke said:

Hi there, if anyone can help me out I would be greatly appreciative. I am forever filling my hydramatic in my 1959 Catalina to the proper fill level, while its warm and running. However over a week or so I have a fair amount leak out the dust cover and I will again need to top it up. Its not major and has been doing it for the 3 years that I have had it. But what I have been trying to find out before I even contemplate purchasing a seal kit, is what my dipstick length should be and I can not find this info out anywhere  ( I live in Australia, so it is a challenge sourcing info). The engine was apparently rebuilt and the filler tube looks brand new, so I just want to first make sure I am using the correct tube/ dipstick. Once the fluid gets down to below the dipstick it stops leaking and shifts as normal. But I am too afraid to run it like that in case I am burning out the tranny, so I fill it back up. Does anyone know the length of the filler tube and or dipstick for a 59 hydramatic? Thanks in advance.

hi Luke, i have justA had my 64 hydromatic rebuilt as it was leaking out the same cover !!! 

my trans builder guy, told me ....  and we checked it too... the full level is flush with the cast mounting surface where the pan bolts up.

so hold the dip stick next too the filler tube and see what your one shows compared with that machined surface,👍 

But remember that fluid level is checked with the trans warmed up and engine running👍

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