@JimSturges: Oil leak is fixed on the McLaren and 18 laps on the board this afternoon. Teams do change the power units during testing - sometimes with a planned change, sometimes it's not planned!
@NorbertHaug: Filming day I suspect
Vettel is back in the pits. So either he retired in the first stint of his race sim or the team is focusing on other objectives right now.
@bart: Yes, we probably should warn you that testing isn't that exciting. There's no climax to the week, just constant pounding round. Finding the true stories requires a bit of digging.
@benoîtcomeau: I'm looking forward to my first trip to Montreal to cover the race this year. Austin has done a fantastic job since getting the GP in 2012. Singapore also has a lot going on and the race in Abu Dhabi is always coupled with three big concerts on each night. Melbourne is very welcoming and Albert Park itself is full of fan-friendly stalls and exhibitions to look at when there's no track action. They also do a celebrity race in Mazdas that usually ends in a few big shunts!
@BarryLauer: It's a very promising start to 2015 considering we had some serious doubts about whether it would even be here at the end of last year. The car clearly lacks downforce compared to some of its rivals but is turning in respectable lap times and seems fairly reliable. I think points will be back on the agenda in 2015.
@rockedin123: That's correct. The Mercedes looks like the class of the field again.
Button is back on track in the McLaren. Another slow days with 19 laps and counting
@KumarAbhisek: Another solid day as the team makes up for lost time earlier in the winter. I'm not sure we've seen Perez or Hulkenberg give it the full beans yet, but the team has a lot to work through before Australia.
@MrTuK: It's good to talk about the future direction of the sport and something needs to be done to address the declining TV figures. However, when engineers are let loose they don't consider aesthetics, it's all about performance. I suspect that even with some changes to the regs, the cars still wouldn't look as good as that. It was also interesting when we did a poll on this page the other day that people did not prioritise looks, they were more interested the power of the cars.
Button has improved to a 1:25.994, but it's not what I'd call a quick time. Soft tyres on the McLaren at the moment.
@JimSturges: Really hard to say with any certainty, but from what I have seen I reckon a gap of 0.5s-0.7s is a conservative estimate. It seems very competitive behind with Williams, Ferrari and Red Bull. I don't think we've seen anything like the best from Red Bull and as long as the PU is performing they could challenge Williams, which has emerged as the most obvious competitor to Mercedes. There shouldn't be as big a difference between relative quali pace and race pace this year because the PUs are a lot more efficient and fuel saving won't be as big a factor as last year.
@Hardik: The team should have updates for Australia, but so will their rivals.
@HashwanthMaripina: They have run both flow-viz paint and aero rigs on the McLaren. McLaren use UV flow-viz, which is less obvious and can only be properly analysed under a UV light.