No matter how well I try to protect my previous 2 cycle weed trimmer engines - they always die within two years . That is using top tier gas , Stabil and name brand 2 cycle oil . I have stored 2 cycle engines filled up for winter and run dry for winter - no difference detected ...still have gummed up carbs , eaten away rubber parts , etc. Just bought a new Toro power head (25.4cc) commerical engine and decided to try the TrueFuel 50:1 fuel . Yes , the TrueFuel is much more expensive than gas plus mixing myself but since I only use my weed trimmer about 6 times a season - I'm hoping with TrueFuel my 2 cycle engine will last at least 3+ years . Any one with experience to add ?