This upgrade causes the collected canisters to make more tanks than usual. The more you increase this value, the more fuel you get when you collect each canister.
| Bonus-tank | Number of coins |
| 0 | – |
| 2 | 150 |
| 4 | 350 |
| 6 | 750 |
| 8 | 1300 |
The specified coins only contain the required number for the next level.
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