Can you put 91 octane in a lawn mower?
Can you put 91 octane in a lawn mower? What is the best small engine or lawn mower gas? Fuel for your lawn mower or outdoor power equipment must meet these requirements: Clean and fresh - fuel can begin to deteriorate in as little as 30 days. A minimum of 87 octane/87 AKI (91 RON); If operating at high altitude, see below. Do lawn mowers run better on premium gas? They key takeaway is that there is no benefit if the octane is higher than what the engine requires. Your mower will run just fine on regular gas. It will...