I added about 2 1/2 gals of gas (thought it was diesel) to what i thought was a near empty oil tank. turns out the tank had about 40 gals of fuel in it. i quickly drained it out and have it stored in a drum. now that i have 150 gals of oil in the tank is it safe to add any or all of this stuff back into the tank. im getting conflicting opinions from folks and having a hard time trying to get rid of the stuff. Thanks for reading this. help!