What is "iowa virgin soydiesel"? Does that mean straight soybean oil, or has he processed it into biodiesel?
You can buy pure soybean oil from Smart & Final in 5 gal. jugs for about $13, or just over $2.50/gal. And they just had a newspaper insert $5 off coupon on purchases over $25 good through Jan. 30. So that would bring the price down to around $2/gal if you buy two jugs. It will last you for 10 tanks if you add a gallon per tank, creating basically a nice B5 blend. That's what I'm doing currently