An oil tank for a Stihl MS310 can be bought directly from Stihl dealers. Alternatively, there are specialty shops online that sell chainsaw parts.
I gather it is an MS310 and Stihl's oil mixes at 50:1
50:1 Stihl HP Ultra oil
Use regular Stihl 2 cycle oil. You mix it 50:1.
actually Stihl has their own synthetic 2 cycle oil we highly recommend for use in all Stihl products
All Stihl products use a 50:1 mixture
The fuel mixture for a Stihl chain saw is gas and oil.
50:1
50:1?
The mix is 1:40 for stihl oil and 1:25 for other branded oils.
50/1
The Stihl 024 AV Super chainsaw features a 2.0 kW (2.7 hp) engine with a displacement of 45.4 cc. It is equipped with a fuel tank capacity of 0.5 liters and an oil tank capacity of 0.25 liters. The chainsaw has a guide bar length typically ranging from 16 to 20 inches, making it suitable for various cutting tasks. Additionally, it incorporates Stihl's anti-vibration system (AV), enhancing user comfort during operation.
Some Stihl chain saws have an adjuster underneeth the saw to turn up the oiler .