Originally Posted by Richard Martin
Any quality conventional oil is perfectly suitable for the air cooled engines that we use. And I have test results to prove it. The only reason you would want to use synthetic is if you want to extend oil change intervals.
That is correct and it's great for a car to extend changes but you should not extend changes on mowers.
G & G Lawn Care
2013 F 150 XLT 4x2 Super Crew
Mowers: Toro Z-Master 2000 Toro GS 36" Toro TurfMaster Cub Cadet Z-Force 48"
Blowers:Stihl BR 600 BR 550 BR 380 BR 200 Trimmers: Stihl FS 110 Stihl FS 90
Edgers: Stihl FC 90&75 Echo BRD 280 Pole Saw: Stihl HT 75 Hedge Trimmer: Stihl HL 45 HS 45