Felipe Massa continued to show no ill effects from the life-threatening injuries he sustained last year with the Ferrari driver fastest in Formula One testing for the second straight day.
The Ferrari driver clocked a best lap of 1 minute, 11.722 seconds from 124 laps around Valencia's Cheste circuit to lead Sauber's Kamui Kobayashi by just over three-tenths of a second today.
Lewis Hamilton's first spin in his new McLaren left him third best with a lap of 1:12.256.
Renault's Robert Kubica and Nico Rosberg of Mercedes GP were next, with Williams driver Rubens Barrichello and Sebastien Buemi of Toro Rosso completing the field.
Massa is driving his Ferrari for the first time since a freak crash at Hungary in July.