ORIGINAL: BkChallenger09R/T

I've used GTX oil for many year's with great luck . Took out the service contract on my wife's new 06 300C when I got it for her . And let them use the Mopar oil in my 07 Quad Cab Dodge Ram 4x4. But took the GTX to the dealer for oil changes in a 06 MX5 GT 6 speed. I traded the truck and MX5 in on the 09 Challenger R/T 6 mt . Thinking of Mobile One or the GTX . If the dealer will use it if I take it to them . Dealer's change brand's sometime or bulk and different weight oil . Like to keep the same thing in it .