First start in 7 years

I recently acquired a couple older late 80's and early 90's oil injected snowmobiles. Neither of them has been started for 7-8 years. My question is, should I put some 2 cycle oil or something similar down the spark plug holes before I try to start them for the first time? They both ran but were put away, just sat in a shed all those years.
Carbs have all been torn down and cleaned well with fresh gas..

First start in 7 years