Mixing fuel for Stihl chainsaws can feel like an uphill struggle. Since Stihl chainsaws feature a 2-cycle engine, they require the recommended mixture of gasoline and oil to run efficiently. Failure to use the correct mixture results in the engine\u2019s low performance and reduced chainsaw\u2019s lifetime.<\/p>\n\n\n\n
If you can access the operator\u2019s manual, check the manufacturer\u2019s recommended fuel-to-oil ratio. What if you don\u2019t have the manual or don\u2019t want to go through it looking for the figures?<\/p>\n\n\n\n
Thankfully, this article provides a Stihl oil mix ratio chart you can use when adding fuel and oil to your chainsaw. You\u2019ll also learn why you should use the correct oil mix ratio.<\/p>\n\n\n\n
Stihl gasoline-powered chainsaws use a 50:1 fuel-to-oil mix ratio. That means the mixture should have 50 parts of gasoline and 1 part of lubricating oil. This mixture should be ideal for lubricating engine parts and protecting them from excessive friction and heat.<\/p>\n\n\n\n
This fuel-to-oil mix ratio applies to all Stihl chainsaws with a two-cycle engine. The 50:1 is easier to calculate than in some chainsaws that require a 40:1 mixing ratio.<\/p>\n\n\n\n
The 50:1 gasoline\/oil mixture indicates that you require 2.6oz of oil per gallon of gasoline. Let\u2019s see how we\u2019ve arrived at 2.6 ounces of oil.<\/p>\n\n\n\n
One gallon of gasoline = 128 ounces (oz.), so when using the 50:1 mixing ratio, you\u2019ll need 2.6 ounces of oil per 1 gallon of gasoline. <\/p>\n\n\n\n
If you\u2019re mixing gasoline in liters, use the same 50:1 ratio. In this case, you\u2019ll need 20 milliliters of oil per 1 liter of gasoline. So, why use 20 milliliters of oil?<\/p>\n\n\n\n
If doing all the calculations when creating the mixture appears daunting, you can rely on the table below to make your work easier.<\/p>\n\n\n\n
Use this table when mixing fuel in gallons.<\/p>\n\n\n\n When mixing gasoline in liters, use the table below.<\/p>\n\n\n\n After knowing the right mixing ratio, you\u2019ll need to blend the two products correctly. First, ensure you have the recommended fuel and oil for your chainsaw.<\/p>\n\n\n\n When choosing gasoline for the chainsaw, it\u2019s advisable to go premium. Stihl recommends mid-grade unleaded gasoline, whose octane rating is 89.<\/p>\n\n\n\n Gasoline with a lower than 89 octane rating can increase the engine temperature. Eventually, the heat might damage the piston and various engine parts.<\/p>\n\n\n\n Regarding oil, choose 2-stroke oils for your Stihl chainsaw. If you don\u2019t want to scour the market looking for the appropriate oil, use the Stihl HP Ultra Oil.<\/p>\n\n\n\n This oil is a fully synthetic 2-stroke and has outstanding cleaning characteristics. It\u2019s highly biodegradable and will protect your chainsaw engine against friction and heat.<\/p>\n\n\n\n When mixing fuel with oil, look for a no-spill fuel can<\/strong><\/a> to reduce evaporation, permeation, or spillage.<\/p>\n\n\n\nFuel Quantity (Gallons)<\/strong><\/td> Oil Quantity (Ounces)<\/strong><\/td><\/tr> 1<\/td> 2.6<\/td><\/tr> 2<\/td> 5.1<\/td><\/tr> 3<\/td> 7.7<\/td><\/tr> 4<\/td> 10.2<\/td><\/tr> 5<\/td> 12.8<\/td><\/tr> 6<\/td> 15.4<\/td><\/tr> 7<\/td> 17.9<\/td><\/tr> 8<\/td> 20.5<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n Fuel Quantity (Liters)<\/strong><\/td> Oil Quantity<\/strong>(Milliliters)<\/strong><\/td><\/tr> 1<\/td> 20 ml<\/td><\/tr> 2<\/td> 40 ml<\/td><\/tr> 3<\/td> 60 ml<\/td><\/tr> 4<\/td> 80 ml<\/td><\/tr> 5<\/td> 100 ml<\/td><\/tr> 6<\/td> 120 ml<\/td><\/tr> 7<\/td> 140 ml<\/td><\/tr> 8<\/td> 160 ml<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n How To Mix Fuel With Oil for Stihl Chainsaws<\/h2>\n\n\n\n