Ferrari have fitted out Carlos Sainz's F1-75 with his second engine of the season, opting to make the change as a precaution.
Sainz, as well as teammate Charles Leclerc, have run with one power unit and hybrid ancillaries since the start of the season, meaning the Spaniard is now moving onto his second of three permitted Internal Combustion Engines.
"Carlos' engine has been changed as a precaution following the impact in Australia as we do not want to take any risks with the Sprint weekend format," read a short statement from the team.
This would suggest that Sainz's first engine remains in his pool for use at a later point.
The engine regulations dictate that drivers are permitted three units a season. Once a driver requires a fourth engine, they will be forced to take a 10-place grid penalty on the race weekend at which it is introduced.
Alpine also make an engine change
Alpine have also made a change on the engine front, with Esteban Ocon's A522 fitted out with his second power unit of the season.
"As a precaution, the team will fit a new power unit for Esteban at this weekend’s Grand Prix," Alpine said in a statement.
"This will be his second of three allocated power units for the season, therefore not incurring a penalty."
Ocon's teammate, Fernando Alonso, is already onto his third engine of the season.
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