Topic: Please help C4 problem

[Mustang65]

hi ladies + gents,

i'am new here.

 i've a problem with the c4 when the engine is cold,
the third gear will not work!
when i drive any mils (3-5) and the engine have a good temparature, it works perfectly.
 
Mustang 65 V289
help help help

thanks

[Soaring]

How is the fluid level when it's cold?  BTW, welcome to the site. 

[Mustang65]

level is ok.

[Tim175]

when was the last time the fluid/filter was changed?

[Mustang65]

2 years (i hope so)
i think/hope the first owner in germany has changed by modify/ overhaul. thr oil is an dexron 2.

[Soaring]

Wrong fluid.  You need to drain that dexron out and refill the tranny with type F. 

[Mustang65]

ok, i'll change next weeks, but is this the only problem of this mistake?

[Soaring]

Most likely. 

[Mustang65]

i try to change the oil quikly.
(the boss of a mustang dealer garage said, when it's not an original trans, therefore an overhoul c4, then can i work with dexron 2)
thx. very much