40to1
32:1
Mixture is 40:1.
For the GZ25n, it is 50:1.
50:1
Look on the Gas cap of your weedeater. It should tell you the gas to oil ratio. If its not there try looking in the manual or online.
I purchased my Toro weedeater in 2007. It uses a 50:1 gas/oil ratio.
Todays fuels and oil generally are 50:1 mix ratio. Use a name brand oil and mix it to the ratio it specifies is the rule.
50:1 Stihl HP Ultra oil
I have a pb 2100 made in 2000 all my echo prouduct's call for 89 octane fuel and echo two stroke oil mixed 50-1 . I run the same mixture in my pb 2100 , pb 251, and pb 250 leaf blower and even my srm 225 weedeater. So this is the correct mix to use in anything that has a two cycle motor.
The Gas/Oil ratio is 50:1
Husqvarna fuel mixture ratio is 50:1
Echo-branded oil is a 50:1 ratio and is available in bottles pre-measured to mix with certain quantities of gas.