Certainly makes sense.....
On two of our seemingly original cab 12 the line is solid and runs directly to the filler neck of the radiator where it connects to a brass fitting. The pipe has a tar impregnated loose cover similar to what is used for electrical wiring.
When the radiator shop redid my radiator core they installed a brass threaded connector directly in the rad tank and soldered shut the opening at the bottom of the neck...... they said it would be stronger....I did not bother to argue about it.....and it does work nicely.
Maybe designers got wise with the cab 13 .
Cheers
__________________
Bob Carriere....B.T.B
C15a Cab 11
Hammond, Ontario
Canada
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