My 2009 Challenger 5.7 Hemi with an Automatic does not have a tramsmission dipstick. I purchased a 2011 Ram with a 5.7 with an Automatic and it has a transmission dipstick. Could I buy a dipstick and put in on my Challenger? The transmissions are not the same because the truck shifts at different RPMs. I read on here a while back that the dealer has to check the transmission fluid at a certain tempature with special tools. That sounds expensive. Just courious.