when do I need to change transmission oil and clean out trans 4.7 Magnum. in Ram 1500
I have a Ram 1500 4.7 magnum 2006 runs good yet it is at 113,950 miles
so I need to change out transmission oil and replace. Do the timing belt/chain
It's had bearings replaced in front and rear. I use K&N air filter use Royal
Purple every 10 K and am thinking of going full synthetic oil. What's your
opinion thanks.