This should be followed by some start practice.
That concludes our live coverage of day two of the test.
We will be back bright and early for the final day in Bahrain at 6:45am (UK time) on Saturday.
See you then!
System test time...
Top 10: Zhou, Verstappen, Alonso, de Vries, Hulkenberg, Sainz, Sargeant, Leclerc, Piastri and Gasly.
A glory run for Alfa Romeo? Zhou goes quickest.
Verstappen, de Vries, Hulkenberg, Sargeant, Leclerc, Piastri and Gasly are all circulating.
Another strong showing from Alonso in the Aston Martin, moving up to second 0.555s off Verstappen.
Many in the paddock are tipping Aston to be the fourth-quickest team going into round one.
He's now 0.5s off Verstappen on the C4s.
"Confirmed hydraulic failure caused George’s stoppage. Highly unlikely the car will be back out today."
Top 10: Verstappen, de Vries, Alonso, Hulkenberg, Sainz, Sargeant, Leclerc, Zhou, Piastri and Gasly.
Making the most of the C4s, de Vries slots into second behind Verstappen - 0.7s between those two.
A lot of green sectors are now showing up - from de Vries and Zhou.
More changes to the timing screen as Alonso slots into second, 0.7s off Verstappen.
Both drivers set their best time on the C3 tyre.
He moves up to seventh, 1.495s off his fellow countryman, Verstappen, who remains top of the pile.
After an earlier oil leak, the reigning champ is back out there with 1 hour 13 minutes on the clock.
Piastri takes to the track for McLaren.
The session will resume in one minute.
Red Bull have been dealing with an oil leak on the RB19.
RED FLAG
— Formula 1 (@F1) February 24, 2023
The Mercedes of George Russell has stopped out on track #F1#F1Testingpic.twitter.com/55CrOcGtm8