What mix of oil and petrol for a 1982 97cc Yamaha?

For a 1982 97cc Yamaha, the recommended mix ratio for oil and petrol is typically 50:1, which means 50 parts petrol to 1 part two-stroke oil. This equates to 20ml of oil for every liter of petrol. Always ensure to use high-quality two-stroke oil designed for air-cooled engines to maintain optimal performance and engine longevity. Check your owner's manual for specific recommendations as ratiOS may vary slightly by model.