The design and location of the oil tanks on Formula One cars are strictly controlled to minimise the risk of oil leaking in the event of an engine failure or an accident. Oil may not be added to cars during the race.

The car’s coolant header tank must have an FIA-approved pressure release valve. The cooling system must not make any use of the latent heat produced by the cooling process.

Coolant and oil lines are not allowed to pass through the cockpit. They must also be fitted so that any leaked fluid cannot find its way into the cockpit.