I would be very cautious buying a STIHL saw. I used STIHL oil, mixed at their recommended ration and have 6 month old $700 blown saw with very limited use that they will not warranty!! I was using two other pieces of two stroke equipment at the same time with same gas etc and no issues. I have had great luck in the past with STIHL products. But it’s the first time dealing with warranty and it is very disappointing. I emailed and spoke with a customer service rep and I am being told to contact the dealer. The dealer says contact Stihl. Stihl again says Contact the dealer. Good luck with any purchases and enjoy well they are running!!