Kimi Raikkonen feels "very positive" after two days re-acclimatising to F1 in Valencia this week.

After two years away from F1, with Raikkonen primarily competing in the World Rally Championship, the Finn is poised to make a return with Lotus this year.

Raikkonen ran in a two-year-old car and on Pirelli demonstration tyres at the Ricardo Tormo Circuit completing 171 laps and 666 kms overall.