The 6.4 needs to have the two fuel filters changed every 15,000 miles & you must change your oil every 5,000 miles, You must drain the water out of your fuel every month, I've done this & my 2008 6.4 hasn't given me any problems.

 

I drove one of the new 6.7s and wasnt the least bit impressed. My 6.7 dodge i bought will run circles around it almost 400 horse or not. Get a 6.4 nothing a little spartan tuning wont fix

 

Where do you drain the water out of the fuel and do you need to still do this stuff if you have a tuner and dpf delete? I thought the 5000 mile oil changes were because of the fuel getting into the oil caused by the regen cycle!

 

Get a 6.4 spartan tuned and dont look back, save yourself from that 60000 dollar price tag and from having to **** in the tank to keep it from leaving your *** on the side of the road.

 

On the driver side, right on the frame you will see a canister with a nozzle, put a plastic soda or water bottle on the nozzle & pull the lever, a stream of diesel with water will drip out, let it run for 30 second & then CLOSE the lever smartly & tight. You have to do this to protect your injectors from the water REGEN will pour fuel into the oil SO change your oil no later than 5,000 miles

 

got a buddy in Orlando with the 6.4 that he drags - he's very happy with it... comes stock with lots of power and speed... like stated, run the tuner and exhaust and your good to go...

 

I love my 6.4 Don't knock it til you mod it!!!

 

I recently purchased a 6.4 and I love it this makes the second powerstroke I have owned I had the awesome 7.3 but good luck finding one of those these days that's under a hundred thousand miles I had some trouble with the stupid water in fuel light turned out to be a bad sensor imagine that the only down fall I have with mine is the emissions bs but in the process of kicking it to the curb I average around 12 mpg with a small horse trailer or putting around town I am young so it gets drove like I stole it love the 6.4

 

My 6.4 is 4 years old & it hasn't broke down once, had the dpf light turn on, drove it hard & it went away