For 2-cycle oil it is 40:1 and for 30 weight auto oil it is 25:1
50 to 1 2.6 oz oil to 1 gal. gas
40:1
hate your site fu
Use regular Stihl 2 cycle oil. You mix it 50:1.
The Stihl MS250 chainsaw requires a gas-to-oil mixture ratio of 50:1. For 5 liters of gasoline, you would need to mix in 100 milliliters of 2-stroke engine oil. This ensures optimal performance and lubrication for the chainsaw’s engine. Always use high-quality oil specifically designed for 2-stroke engines.
32:1 or 40:1 with high quality 2-stroke oil mix would be fine. http://store.chainsawr.com/
50:1 Ratio
I have the owners manual for my 041 farm boss it states " The mix ratio1:40 with stihl oil and 1:25 for other branded oils
50/1
25 : 1
Go 50:1.
Stihl recommends using unleaded gasoline with a minimum octane rating of 89 (mid-grade) for their chainsaws. Higher octane fuels can be used, but it's unnecessary for optimal performance. It's also important to mix the gasoline with a quality two-stroke engine oil at the correct ratio specified in the user manual, typically 50:1. Always refer to your specific chainsaw model's manual for the best fuel recommendations.