\do you use Alison tran fluid in a 20 year old coach
is it synthetic ?
just want to change my filter .
lenny

You can if you want to. I changed over to transynd in my Allison a couple of years ago in my 46 year old MCI bus. It is supposed to make it run a little cooler, (can't tell for sure on mine), and shift easier. (seems like it does). Can't just add transynd to existing fluid though,....you need to have it flushed out and replaced. An Allison shop can do it. Also even though it costs more to do it at first, your change interval goes to 4-5 times longer so it saves you money in the long run.

allison siad the oil is very compatible and don't worry.
lenny
PS is it true ?

Hi Lenny & Judy, hope this finds you both in better health. On ours Lenny, I changed to it. Drained as much I could, drove it awhile then changed it again. Good to go. It did lower our trans temp about 20 degrees. Keep in mind we travel a lot and tow a 3400lb Jeep with a 250 hp engine. Yes it is very compatible. See ya all T&N

it us only $50.00 a gallon and only money
judy will be out of town in feb . her sister is having a operation on her knee .cant get to n&d's. come on down and get pluged in.
lenny