DT 550 is NOT intended to be used as an oil replacement. DT 550 makes no claims to the quality or efficiency of any brand of lubricant. DT 550 is NOT an oil additive, it is a friction reducing lubricant that can be used as a stand alone product or in conjunction with any oil.
Pre-mix - Use 2 oz. per gallon of mixed fuel once or twice per year
Oil Injected - Add 4 oz. in oil once or twice a year
Air Cooled - add 2 oz per Qt. of oil every 2500 hours or once per year.
Liquid Cooled - add 1 oz per Qt of oil every 2500 hours or once per year.
Commercial Use: - add DT 550 every 2500 hours or once per year
Personal Use - add DT 550 once every 5 years or 50,000 miles
When used as directed, manufacturers liability is limited to
replacement of this product or refund of purchased price upon
return of unused portion with proof of purchase