Massa is aiming to win his home race and claim his first victory in four years, although he also knows he has to play the team game for Fernando Alonso's championship aspirations.
"A very busy Friday in terms of our work on track, with a lot of kilometres completed to find the best set-up for the car", he said.
"I am reasonably pleased with my times, especially when it comes to pace over a long run: I think I was the fastest man on track in the final part of the session. On my first lap with the Mediums, I lost a few tenth at the second corner, so, in terms of an outright time, I could have done even better than fourth place".
"The tyres are the same, but their performance is completely different to what we saw in Austin last week: definitely degradation is much higher here and so I don’t think we will see a one-stop strategy."
Massa joked that his helmet - modified to pay respect to his father's design - confused him in practice.
"The helmet? It’s odd not seeing anything yellow in the mirrors to the extent that sometimes I thought it wasn’t me at the wheel"!