I have a Toro CCR 1000 snowblower and by mistake a small bottle of 2 cycle oil was put into the empty gas tank without being mixed with a gallon of gas. Once the mistake was noticed did not start or do anything with the snowblower, not sure if should just add gas but also not sure of tank size. If anyone knows what to do would appriate the help. Thanks

Dump the tank , and put in proper mixture,
Too much oil can gumm up rings,
Not enough oil can damage piston and or cylinder.
Why take a chance ?
Luck