Mercedes reveal Hamilton damaged engine "looks normal"

Mercedes' analysis of Lewis Hamilton's damaged engine is that it "all looks normal" after Friday's second free practice session.

During the last race in Brazil, Hamilton's engine suffered a problem in the variable inlet system, which caused unstable combustion during the race that he went on to win.

Mercedes made some changes, outside the parameters restricted by the FIA ahead of this weekend's season finale.

Andrew Shovlin, Mercedes chief race engineer said to Autosport: "We ran through a number of checks on Lewis' power unit and so far it all looks normal, which is good news.

Shovlin also revealed that Mercedes' plan on Friday was also to experiment a bit more for next season, with this being the last race of their record-breaking season.

"We had a lot of 2019 test and development items on both cars in FP1 so that was a very busy session although we were still able to do a reasonable amount of normal race preparation," Shovlin continued.