Tranny and T-case lubes

[MikeS]

Do you prefer synthetic lube or the standard stuff?

If synthetic, does it hurt to switch an older vehicle that's had stock lube run in it for years?

[bbagwell]

I just use the standard stuff but I am cheap.

[Rescue]

I`m going to put some semi synthetic in my tranny. The cold really sounds like its taking a toll on it. (75/90)