Felipe Massa put Williams on top of the timesheets as pre-season testing resumed in Barcelona on Tuesday.
Massa clocked the Circuit de Catalunya in 1:19.726s on a set of supersoft tyres, nearly touching Valtteri Bottas’ best effort from the first pre-season test.
Crucially, the Brazilian logged 168 laps of the Spanish circuit after Williams’ running was severely curtained by two separate incidents for Lance Stroll last week.
Red Bull’s Daniel Ricciardo ended the session in second place, with his best time coming on Pirelli’s ultrasoft tyre.
Ferrari’s Sebastian Vettel was the only other driver to dip in the 1:19s, with the German lapping in 1:19.906 on a set of soft compounds.
Vettel, who tested a prototype Pirelli tyre in the morning, completed 168 laps on Tuesday, sharing the lap count honours with Massa.
Meanwhile, Mercedes’ Lewis Hamilton was left disappointed with fourth in the timesheets, despite trialing a heavily-revised version of W08.
Hamilton’s teammate Valtteri Bottas was fifth after taking over the car at lunch time, the two drivers completing a total of 136 laps between them.
Esteban Ocon was sixth during what was Force India’s most productive day of pre-season testing, as the Frenchman racked up 142 laps on Tuesday - more than half of what Force India managed during the entire first test.
Former Force India driver Nico Hulkenbeg was seventh for Renault, which was forced to make an engine change during the early hours of the day. This limited Hulkenberg’s teammate Jolyon Palmer to just 15 laps and a spot at the bottom of the timesheet.
Meanwhile, Haas and Toro Rosso ran mostly trouble-free, with Kevin Magnussen and Daniil Kvyat classified eighth and ninth.
More trouble ensured for McLaren-Honda with the Woking-based squad forced to make another engine change for Stoffel Vandoorne. The Belgian returned to track late in the afternoon and set a time of 1:23.537s to prop up the top 10.
Pascal Wehrlein returned to the cockpit of a Formula 1 car for the first time since his crash at the Race of Champions, the German finishing just ahead of Sauber teammate Marcus Ericsson in 11th.
1. Felipe Massa - Williams - 1:19.726 - 168 laps
2. Daniel Ricciardo - Red Bull - 1:19.900 - 89 laps
3. Sebastian Vettel - Ferrari - 1:19.906 - 168 laps
4. Lewis Hamilton - Mercedes - 1:20.456 - 49 laps
5. Valtteri Bottas - Mercedes - 1:20.924 - 86 laps
6. Esteban Ocon - Force India - 1:21.347 - 142 laps
7. Nico Hulkenberg - Renault - 1:21.589 - 58 laps
8. Kevin Magnussen - Haas - 1:21.676 - 81 laps
9. Daniil Kvyat - Toro Rosso - 1:21.743 - 83 laps
10. Stoffel Vandoorne - McLaren - 1:22.537 - 80 laps
11. Pascal Wehrlein - Sauber - 1:23.336 - 47 laps
12. Marcus Ericsson - Sauber - 1:23.360 - 53 laps
13. Jolyon Palmer - Renault - 1:24.790 - 15 laps
by Rachit Thukral