TF: Fold the front left side of the base out and lock against the back of the left side which reveals a 4 barrelled gun station. Remove the flag - which you'll need later. You can remove the petrol pumps at this stage too - it's not in the instructions but they can be stored on the underside of the panel they're pegged into. Stand on the back of the base and fold back the grey building revealing three more guns that raise up. Fold the right side of the base up as a tower revealing a missile launcher and search lights that both fold out. Slot the flag into the side of the tail.
This base mode has weapons everywhere ! The missile launcher at the tower's base is mounted on a 5mm peg so it can turn, there's a pivot in it so it can elevate and the missile is removable. The quad gun too is mounted on a 5mm peg so both are interchangeable and both can be used as handweapons by larger toys with 5mm peg holes in their fists. The quad gun also turns and elevates. In between the two there's an array of three cannons that elevate together - there's a little command post in front of these and another platform on top of the tower for a Micromaster to stand on. The only real problems with the base are that you can't use any of the ramp connectors in this mode and that Ironworks does the tower style base better.
The real plus point of the base mode is the weapons but otherwise it's merely adequate and done better elsewhere.
Greasepit was released in Japan as the Cybertron(Autobot) Transformers Zone toy C-341 Glasspit. The Gasoline Battlestation was re-released in Japan as part of the Brave Police line with PVC figures replacing the Micromaster.