Many people have done different things in the past that they found out later where wrong,IE using leeches to help rid the body of poisons, same thing on blood letting Once the U.S. Goverment got involved in determining what comercial diesel fuel specs. are we all got the short end of the deal Pump diesel use to have 225,000 BTU per gallon in it, not anymore It was considered "dirty so they removed a bunch of the " dirty contaniments" so it now has less than 130,000 BTU per gallon As already mentioned what use to work doesn't apply now in todays world