Dextron 5 in c4 after rebuild?

[garystocker]

I ask the garage performing a rebuild on my C4 if the fluid would remain type F and they replied that for longevity reasons they will be using dexron 5. I have heard of dextron II or III fluid being used in rebuilds before but I have never heard of Dexron 5.

Isn't that fluid synthetic? Can i use synthetic fluids in an old ford tranny even newly rebuilt? I thought Mercon was made for Fords, not Dexron?

Have you heard of this being used in C4's before?

If the tranny can work and last on that stuff I am told it has better heat dissipation properties and the addition of friction modifiers which will preserve the clutches.

Sound accurate to you?

 

[brianj5600]

You might be surprised what will work in a C4. Mine has 0-20w Mobil1 motor oil. A more common fluid is John Deere highgaurd.

 

[blown65]

PA recommends Dextron also, so that's what I used.

 

[Wicked65]

PA recommends Dextron also, so that's what I used.

The Dextron 5??

 

[brianj5600]

The fluid you use has a lot to do with what friction plates are used. Friction modifiers usually mean something added to smooth out shifts.

 

[blown65]

May not be 5. Missed that part. I believe its dex4 I'm running but gotta look.

 

[rbohm]

in the old days, dexron lll was used in many ford transmissions for those that wanted a slightly softer shift.