Thank for the reply.
The ATF in there only was used for a year and the top up is because of the strip down of the donor, so lost only what was in the cooler and lines.
Might ask Penrite directly if compatible or buy a couple of litres from the dealer.
The HEMI is a 2008 model just before the VVT came in.
I was just going to run the factory spec viscosity.
Just found the thread I remember seeing a while ago about it.
http://www.ausjeepoffroad.com/forum/...highlight=5w20