I have a 96 Ram 1500 4X2 with 260,000 miles all I can say is change oil,
trans. fluid/filter, grease what is greasable, change rear axle oil. Buy
whatever type of lubes you like, I myself have had great luck with the Mobil
1 products and do the above religiously! Also I use the K&N air and oil
filters. I replaced my timing chain and gears at 120K and 240K, just to be
on the safe side, and rebuilt the top end at 240K and put in a oil pump at
same time,again just to be on the safe side. Someone told me to avoid
running with your gas tank with 1/4 tank or less, the gas cools your fuel
pump, so the less gas in your tank the less cooling for the fuel pump.
Good luck, DMSO