Hey guys I just installed a grease car kit a week and a half ago on my 89 f-250 7.3L and have since put about 600-700 miles on it, I had a few questions if anyone feels like helping.

First where do I get replacement filters? autozone didn't have them
but is there an equivelent I can find at local auto parts stores?

Second- I installed the kit closely to the directions but thought it better to add an extra fuel pump because the stock fuel filter on my truck is after the lift pump so if i would have tapped into the fuel line prior to the lift pump, the veg oil would have gone through the heated filter then filled the diesel filter up with veg oil before going into the IP. but the question is the return line to the veg oil on the install said to return it to the outlet side of the lift pump, wich i did however wouldnt it make more sense to T it into prior to the fuel pump so the fuel cycles through the heated filter?? rather than just pressurzing the whole circuit it it only going though the filter as fast as the engine uses the oil??

third- ive been burning the used motor oil ive had lying around in the kit, seems to work well anybody have any expirience doing this? only thing is it dosnt seem to mix with the veggie oil real good but im sure it does once it sloshes around the tank.

fourth- why would the kit include rubber lines when they work poorly with biodiesel?? I do intent to eventually start making biodiesel as a substitue for the regular diesel for startup and shut down.

Fifth- purge time for this truck? ive been going 25 seconds and timing it so it has another one or two minutes before i get to my parking spot and shut down

sixth and a little about the bugs im working on ideas here would help.
symptoms:
- has become a little harder to start on diesel, even beetween short run times where i dont even switch to grease so it cant be because of a short purge, i have added diesel kleen to the diesel and the oil
- sometimes when switching fuels it stutters a bit and even dies if at idle once it cut the whole way off and i had to switch to purge and still took awhile to crank on diesel to get restarted. but once i got moving i switched to oil again and ran good the whole way home. this is when the engine is cold, or during cold startups once it gets hot enough to switch to oil

- sometimes after extended highway operation, 100 miles plus it will idle for a bit in traffic then begin to idle rough and have trouble accelerating again and is usually fine once back upto speed but at times will loose a little power and pick back up, I dont think it is the filter because it only happens after being run for an extended period, and runs good next time i switch over after being cold, and i thought oil would flow through the filter better when being warm and up at operating temp so long. my suspision was the tank not venting, it seems the valve on the access panel (40 gallon tank ) is only to let air out and when i open the cap sometimes it feels like the tank has an excess vacume, more than ive ever seen on a stock tank in any vehicle. what is up with the allen keybolt on the top of the fill cap? does the fitting in the access panel also let air in to relive a vacume?? my other thought is dirty injectors as it wasn't the easiest truck to start before the conversion.

anyways any thoughts would be of help sorry i wrote so much.

o yea and this is my first diesel I only got it a month ago and i am pretty mechanically inclined and good with all sorts of engines and understand diesels but it is my first so i may be overlooking somthing dumb. if so sorry about that too

o yea and ive seen people talk alot about sucking air but this shouldnt be an issue for me since i added an extra pump and it "pushes" the veg oil into the rest of the system right? the only two connections that could leak air are the one from the PEX to rubber line then rubber line to fuel pump right?? i have made sure these were tightened with engine hot.

and since someone will ask

my prefilter system involves a waterpump that p