soybean oil casue no issues with rubber or vitron hoses... none at all...
once it is converted to biodiesel the methonal remaining in the biodiesel
after the glycerin is removed... it is that methonal that eats up rubber fittings.

So biodiesel will destroy rubber... but since soybean oil has not been processed with methonal it does not eat up rubber fittings...


soybean oil and other oils cause coking in the cylinder, rings and injectors...

so you must be vigliant with your maintenance....