Just bought this (December). I may use it a couple times or once or not at all (Chicago - never know what we’ll get). Do I only add the teaspoon of oil into the engine at end of the season in the spring for storage until next winter? If I use the blower in January, and not again until late February, will the engine rust during those 6-8 weeks of non-use without getting that teaspoon of oil? I don’t need to add the teaspoon of oil right out of the box putting the blower together?