You’re going to want to get a flat plate heat exchanger and a heated fuel filter system. You don’t want the WVO getting cold inside the filter. The FPHE, is going to be better than the veg-therm, because once your temp is up to operating temp your good. And please don’t use cooper, it reacts to wvo. You can pick up a kit from Greasecar.com for around $1,000 and be done with it all. It comes with a complete kit, and if you want to really treat yourself for the long run get a co-pilot. They are worth every penny. Remember, don’t spend a dollar on anything until you have a clear understanding of your needs and your cars needs to run WVO. IF YOU DO IT RIGHT THE FIRST TIME, YOU WANT HAVE TO DO IT RIGHT THE SECOND TIME.
You’re going to want to “T” into the coolant line coming out of your engine. That is going to be your hottest spot to get coolant. Then plumb that into your FPHE, and then into your wvo filter, then back to the tank is goes, then it leaves the tank and goes back into the “T” where the coolant goes back into the engine. Remember that the wvo has to be at least 160-180 before it hits your IP. Not just as it hits the injectors. Your IP is attached to the engine so 180 degrees isn’t going to do anything to it.
I wouldn’t spend any money on filters, hoses, or anything until you have a rock sold plan. That way you don’t waste time or money. Check out places like the infopop biodiesel, greasecar.com, frybrid.com and any other sites that you google for.
Good luck and keep asking questions.

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Professional greasecar installer
Austin TX


98 Jetta TDI with grease car kit + veg-therm (totaled)
87 MB 300SDL running on B99 / greasecar kit + 30 fphe
www.austingreaseguys.com