http://f1sokuho.mopita.com/pc/free/inde ... 16&tt=1170
Tanabe's interview
·To ensure the competitiveness and manage the mileage in the rest of the season,and also consider which track is easy to overtake and which is not,after discussing with the teams,they decided to introduce the new spec4 ICE for both drivers in Sochi.
·The final decision was made after Singapore GP,but they had discussed with the teams for a long time.
·Although they can use old spec on Friday and then change to the lastest spec on Saturday,but they think its better to use Spec4 from Friday so they can have a better calibration for qualifying and race,such as PU settings and energy management.
·So they will run spec4 from Friday in Sochi.
·When asked if its possible that they will introduce spec5 in the rest of the season,he said it depends on how the things is going on but he think they will finish the season with the 2 spec4 engine.