Do I have to buy this echo oil to mix with gasoline? Hardware keeps saying if I buy any other brand I void my warranty. Its extremely pricey and there's my trimmer :
Amazon.com: Echo Products Echo 6450005G Power Blend Gold Oil Mix 50:1 for 2-stroke2cycle Outdoor Power Equipment, High-Performance Semi-Synthetic, Low Smoke Emission 12.8 fl oz (1 Pack) : Patio, Lawn & Garden
ECHO 21.2 cc Gas 2-Stroke Extended Length Curved Shaft String Trimmer GT-225L - The Home Depot
SRM-420TES/U, Brushcutter – ECHO | ECHO
SRM-225 | ECHO-USA.com
Amazon.com: Cordless Gas Petrol Hedge Trimmer Brush Cutter 4 in 1 Multi-Functional Trimming Tool, 52CC 2-Cycle Full Crank Shaft Garden Tool System with Gas Pole Saw, Hedge Trimmer, Grass Trimmer and Brush
Amazon.com : PROYAMA 40cc Gas Powered Brush Cutter, 4-Cycle Weed Eater, 3 in 1 Dual Line Gas String Trimmer and Grass Trimmer, Weed Whacker Extreme Duty : Patio, Lawn & Garden