02 which tranny fluid.

[95DarkGreenGTS]

Which fluid for the 5 sp. I went with castrol mercon V

 

[Jrgunn5150]

I always used GM synchromesh, but the Mercon V will be fine

 

[95DarkGreenGTS]

I used the gm syncromesh stuff i guess no one else has any input. Lame

 

[Mustang46]

I used syncromesh for a long time. I noticed a big difference in the shifting and just the over-all acting of the trans. IMO its just better all around.

 

[Uberstang1]

It will call for merc ATF, I'm not sure about the 3650s but for the t45 Keisler performance doesn't recommend a synchromesh because it can destroy the liner.

 

[Mustang46]

It will call for merc ATF, I'm not sure about the 3650s but for the t45 Keisler performance doesn't recommend a synchromesh because it can destroy the liner.

I ran it for years and didn't ever have a problem but mine was a 3650. To be honest though, it's either the fluid to help in longivity or you have syncro's break. The T-45's just are not a good design, and that is one of the reasons that Ford replaced them.

 

[Jrgunn5150]

I blew a Kesler T45 to bits in like one week lmao, following all their directions. One of the companies that taught me to go rebuild transmissions myself. Them and Monster.