My tranny has the Mobil 3309 sticker right on the passenger side above the pan. I figure if they put it on the side of the tranny, it's pretty good stuff. I've seen the insides of thousands of engines and I'm a little anal about early oil changes. On my Aisin I drained it thru the appreciated drain plug at 15,000 miles and measured carefully to refill same amount. Dipstick was good. I did it again at 30k and 45K and then did the filter and oil at 60,000. 3309 only again at 90,000. I'm at 94,000 miles and shifting like new.
I get the Mobil 3309 ($6.66 a quart) from Summit Racing or Speedway Motors.
Mobil 3309 ATF is a high performance automatic transmission fluid that meets original equipment manufacturers’ specifications for use in certain slip-controlled, lock-up automatic transmissions. Mobil ATF 3309 is recommended by ExxonMobil for use in transmissions requiring fluids of JWS 3309, GM...
www.speedwaymotors.com
$50 and 30 minutes or so for a drain and fill. At 60K I did the filter. A little more work but not bad with the drain plug. Look on YouTube for a tutorial. There are several. Get the skinny 1/4" drive 10MM maybe with a wobble and extension? A few are in a little bit of a tight spot but not too bad. Look under there and you'll see.
Genos for the gasket $25 but the original is reuseable.
When replacing the transmission pan on your '13-'24 Ram Turbo Diesel, you should use a new pan gasket.
www.genosgarage.com
Filter $73 if you are at the 60K or 120K
MOPAR transmission filter for the Aisin AS69RC medium-duty 6 speed automatic transmission used in '13-'24 Dodge Ram 3500/4500/5500 trucks.
www.genosgarage.com
Your mileage may vary! Good luck.