Double limited warranty protection applies to select STIHL gasoline-powered products purchased for personal non-income producing, household purposes only. At the time of your equipment purchase, simply purchase a six pack of STIHL HP Ultra Oil or a minimum of one gallon of STIHL MotoMix® premixed fuel to qualify for the double limited warranty coverage. STIHL HP Ultra Oil and STIHL MotoMix® premixed fuel provide for improved engine longevity. Other restrictions apply. See your local particiapating Ace store for details or refer to STIHL's Limited Warranty Policy.