I really like the combination of being an incremental and a decremental game at the same time. And I like that the upgrades come with a "cost" that is still a net gain for an active player. Overall really creative!

I think the clock artwork is really nice. It took me a little bit to figure out what to do. Seems like you have the start of a game loop but maybe ran out of time? I am not sure how to get the upgrades. Maybe something to expand on later on?

You should describe what the player has to do. I thought that I had to collect all the oil tanks but all the time I had the "game over" screen. After two three tries, I understand that what the game wants is the player click the gears meanwhile has oil/fuel.

Maybe you could suggest this in the game, making a big gear or just a short text line describing what the player has to do