I just hit 33000 miles on my 6.4 2008 f250 running svo since the day i bought it. Thing still purrs like a kitten. I think what alot of people on here misunderstand is how well a diesel really burns oil. Here's a giant tip the engine will run as long as it get's fuel period! If it's running rough or not starting or stalling or lack of power it's all fuel. So a mega change over for this truck to make it run wvo. First pull out and unplug the junk HFCM (horizontal fuel conditioning module) it's a piece of crap! the fuel pump that is stock is no stronger than my mom's living room fountain pump. Go to schucks by yourself a carter 7.3 powerstroke pump. Cut the wires from the power plug of the old pump. Use water proof connectors to solder on wire and ring clips for the new pump. Hook the pump up correctly. Route the return straight back to the tank. (note my top of engine fuel pressure regulator went out after about 2 months of running wvo so get a jegs inline 2-3psi regulator and clamp it into the return. Make sure you get rid of those stupid hydraulic clip on lines they are expensive junk. My final product uses all stainless under the sink water lines they look neat and last well this whole time so far with no complications. Remember who cares if it leaks and you have to tighten it up it's free fuel. You will save so much money over the term of 3 years that you can afford to replace just about anything on the vehicle including the motor and still be ahead. People don't see that. Anyways go on ebay get yourself a nice 20 plate heat exchanger and route the pump output into the heat exchanger. (tip unbolt the bracket from the hfcm and clamp the heat exchanger to it and bolt it back into place. (that way no one can even see your mod
. Next You will need to get glychol down to the heat exchanger. There is a hose that comes off the top of the inlet port module. Unplug it off the bottom port of the resevoir and use a barb to connect it to the glychol line you got running down to the heat exchanger. Plug the return back onto the resevoir. Now take out the POS top of the engine fuel filter tear off all the outside filter media with a pair of pliers you'll notice there is another filter inside (you have to have the filter for the truck to route fuel to the High pressure pump.) so make sure you get all that fuzz off the filter making sure not to damage the plastic or the inside element. Now replace it backinto the housing. Notice on ebay or a napa they sell an external oil filter element. Get this it's not expensive mount it next to the heat exchanger. Now route the outlet of the fuel coming from the heat exchanger through the filter and then into the input fuel line to the engine. Use a ph43 or ph8a spin on and carry a spare. That's it. The truck will start on pure veg no additives, and get about 350 to 375 a tank. If you need detailed help let message me.
DON"T FORGET TO ZIP TIE THE CRAP OUT OF EVERYTHING SO IT DOESN"T COME IN CONTACT WITH THE 4 WHEEL DRIVE SHAFT!! I'll upload pics soon.
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