In order to conquer the extreme environments in SnowRunner it is essential that you have access to garages and fuel in each of the regions you pass through. Check out our Island Lake and Drummond Island Garage Guide to find out how you can get through these regions despite there being no garages.
Garages in SnowRunner are very important as it is around these that you plan your routes when you undertake contracts. Normally you can open your map and you can select the garage from the list on the left and enter it without actually driving a vehicle to it. You can then exit with any vehicle in the garage or open the map again and go back to whatever vehicles you already have in the field. In the case of maps like Island Lake and Drummond Island which have no garages and in this case of Island Lake also no fuel stations it creates a problem. It means in order to make it through these regions you have no alternative but to rely on planning, skill, and a fair amount of luck.
You can however find some fuel trailers scattered around on the Island Lake map to help you out. The real trick here seems to be planning, with the common consensus from players being to bring extra trucks with you. In the case of Drummond Island you can take a maintenance trailer with you from Smithville dam, near the tunnel towards Drummond island. And there's a repair trailer on Drummond Island.
Check out our Money Glitch Cheat to find out how you can quickly get money to spend on vehicles and mods.
We have questions and answers related to this topic which may also help you: