I have Honda HRX 217 GSV190 Hp 5.1, Echo PB-2520 and Echo SRM-225. They are about 3 years old with E3 plugs. Honda run time is 1h 15m and capable to cut 12-18" grass. Honda are known to run super clean emission. Now run time 1h 45m with carb mod and motor/gas treatment. Capable to cut 18-24" grass. It definitely has more torque/power and its super super clean emission. I have notice tiny bit more power with Tribo-MAX Fuel+. Echo weed eater has increase power and burns clean with Tribo-Max 2 cycle oil. It reduce cylinder temp by 30F. Echo blower has increase power and burns clean with Tribo-Max 2 cycle oil with the carb mod its more torque. After 1 year I had to adjust the high idle speed and I gain 700 rpm from factory W.O.T. 7500 rpm. This was done before the carb mod. I had to drop the idle speed 200-500 rpm after one tank but what I notice after one season no longer need to choke the carb. Both blower and weed eater. I tried other high-end 2 cycle oil nothing comes close to Tribo-Max 2 cycles oil.

I have a 2001 Suzuki Swift with 180K miles that gets 40 mpg and now 48 mpg. It use to burn one qt of oil every 100-300 mile and now every 4500-5000. My girlfriend has a 2005 Toyota Sienna with 130K miles that get 115 miles more per tank. My girlfriend daughter has a 2006 Toyota Corolla with 130K miles that gets 26 mpg and now 40-42 mpg. I forgot to mention that all 3 vehicle runs smoother, quiet and more power.