Alternative Energy: How to Make a Heated Waste Vegetable Oil WVO Straight Vegetable Oil SVO Fuel Tank

Heat Your Waste Oil, Used Cooking Oil UCO Tank

Heated WVO Tank

Parts:
1. Sprayer tank from Northern Tool, Tractor Supply etc.
2. Heat exchanger coil I was getting them here, but they no longer list 5/8"
http://www.aquaticeco.com/subcategories/696/Sweetwater-Heat-Exchangers/heat%20exchanger/0 I will update if I can find a new source.
You can also make a coil from 3/8" or 1/2" bendable tubing. Some people use a stainless steel flexible dryer gas line. One of the best things to use is a few feet of PEX tubing from the plumbing supply. It comes in different sizes and works with compression fittings.
3. 5/8" compression to 1/2"NPT fitting (need 2) from the home store
4. 5/8" compression to 1/2"NPT 90 degree fitting (need 2) from the home store
5. Hose barb (need 2) 1/2 female NPT to whatever size hose you are using
6. 1/2 conduit nuts (need 6) from the electrical section at the home store
7. 3/8" compression to 1/2" NPT fitting from the home store
8. Small piece of 3/8 aluminum tube. Steel or copper will also work
9. 5/8" drill bit
10. 3/8" drill bit
11. 3/4" drill bit or step bit.

This technique can be used on any tank that you can get your hand inside. I installed one of these coils into the stock front tank of my '89 F250. I removed the stock sending unit to get inside the tank. I adjusted the coil to fit through the hole and positioned it near the stock pick up tube. If you can not get into the tank, you can cut an access hole at the highest point on the tank. Make a sheet metal patch and secure it with a gasket and sealant. You don't need to heat the whole tank. You just need to warm enough WVO to feed the engine.

The two 5/8" compression to 1/2"NPT straight fittings need to be drilled out so the coil can pass through them. You could use file if you don't have a 5/8" drill bit. I secure them in a vice because the bit will catch and jam while you are drilling. You may need to wobble the bit and bore the fitting a little more to get it to slide over the coil. Drill out the 3/8" compression fitting with the 3/8" drill bit. The piece of 3/8" tube needs to slip through it.