usually 50:1
50 parts gas : 1 part oil
so for every 1 liter of gas you would add 20ml of oil
however my bike asks for 60:1, so check with your manual
go here for a mix chart for different ratios
http://www.manxyouthtrials.com/two-stroke.pdf
Premix ratio is 32:1
for every 9.2 litters of gas add 16 ml of 2 stroke premix oil wich is 32-1
4oz of premix oil for each gallon of gas so for 5 gallons of gasoline you need 20oz of premix oil
does it have an oil resivor or do you pre mix?? my 92 sx is 50:1 premix !! stay up -SpAzR
40/1
For a 1997 Polaris Scrambler 400 4x4, the recommended gas-to-oil mix ratio is typically 40:1. This means you should mix 3.2 ounces of 2-stroke oil per gallon of gasoline. Always use high-quality 2-stroke oil and ensure thorough mixing to keep the engine running smoothly.
The Kawasaki KX100 does not have an automatic premix system for oil and fuel. It is a two-stroke dirt bike that requires the rider to manually mix oil with fuel in a specified ratio before filling the gas tank. Typically, this involves mixing the oil in a 32:1 or 50:1 ratio, depending on the oil type used. Always refer to the owner's manual for the correct mixing instructions.
mix 32 to 1 five times and it equals enough for five gallons
A 1994 polaris 750 sl isn't premix it's oil injected nothing to worry about other than injectors.
Honda recommends a 20:1 ratio for the older 2 stroke engines. The best premix oil you should use is Honda HP2 for this ratio. Use a ratio-rite ( available at most motorcycle shops ) to ensure a proper mixture.
my Johnson seahorse 70hp runs pretty nice at 50:1 fuel to oil ratio (1 litre oil to 50 litres fuel)
A CRF 50 is a four stroke, no premix on this bike.