During WWll Gi's found a field of new German trucks, they were short of vehicles and wanted to use them, problem,they were diesel and US Army did not have access to Diesel fuel. In the Batallion there was an automotive engineer who solved the problem,, just add one quart of 30W oil to each gallon of gas.. wal la problem solved Army used the trucks for weeks untill Diesel was found. One day While driving my Merceded 240-D I ran low on Diesel a few years ago before Diesel was so prevelant and when on fumes i pulled into a gas station and put in 4 gal of gas and added 4 qts of oil, Mercedes ran great to my destination of over 50 miles no loss of power, no knocking,,couldnt gtell the difference,, kept car for another 100,000 miles