Understood. I just never thought of bar oil as enough of an expense that I needed to scrimp on it by substituting something else. The amount I use per year, versus what I'm saving in heating oil... there's no comparison.Ill look i to a bar oil.. it always seemed so expensive.. I purchase oil in bulk as we run through alot of it.. 1 truck is 3 gallons of oil.. per change.. when we serve the machines.. its like 4 cases of 10-30