"McLaren is running the Melbourne-spec Honda engine today, according to sources."

It is understood the Honda engine has been running at a limited capacity in testing so far, so this may indicate the unit is at 100% power today. Of course, only McLaren and Honda know the truth!

It looks like pit stop practice is over at Toro Rosso.

Carlos Sainz goes out and puts up a 1:27.823 on the medium tyre, good for seventh place.

All the drivers have now posted a lap time.

Lee McKenzie
BBC F1 pit-lane reporter

"Lovely catch up with Massa and Bottas at Williams. Good atmosphere in the team. Great coffee too. Feeling a little more awake now."

"Toro Rosso and Carlos Sainz are doing pit stop practice. It's an important element of pre-season testing. Jenson Button said yesterday: 'We did pit stop practice and we did practice starts. We have not done a lot of that in winter testing. So those sorts of things you need to work on as well, not just the performance of the car.'"

Image source, Toro Rosso

We've been bigging up the promise of the new Force India after its showing on debut yesterday, and now the speed is starting to show through.

Nico Hulkenberg has pinged the VJM08 into fifth place with a 1:27.404, within two seconds of the pace-setting Mercedes on the same tyre.

McLaren's Kevin Magnussen has finally clocked a time, a 1:29.336 on the medium Pirelli. The Dane, who lost his drive this season to Fernando Alonso, is up to 12 laps.

That leaves Toro Rosso's Carlos Sainz as the last man still to set a time, although he has done 18 installation laps.

Image source, Getty Images

Here's your top three check:

1. Lewis Hamilton (Mercedes) 1:25.471 (30 laps)

2. Daniel Ricciardo (Red Bull) 1:25.941 (27)

3. Kimi Raikkonen (Ferrari) 1:26.532 (22)

Lewis Hamilton sets a new fastest lap of the day for Mercedes. On the medium tyre he posts a 1:25.471.

Image source, Getty Images

Force India tweet:, external "Flying visit to the pits for Nico and the VJM08. A few quick adjustments and we're on our way again."

Image source, Force India

Nico Hulkenberg has done 37 laps today with a best time of 1:29.277.

Lotus tweet:, external "Nose change for @RGrosjean - all part of the aero evaluation gravy train."

Image source, Lotus

It's probably worth you having yesterday's times to hand. Y'know, for reference.

At the moment the best times today are some three and a half second off Rosberg's howitzer yesterday, so plenty of scope for improvement.

1. Nico Rosberg (Mercedes) 1:22.792 (106 laps)

2. Valtteri Bottas (Williams) 1:23.995 (90)

3. Felipe Nasr (Sauber) 1:24.071 (141)

4. Sebastian Vettel (Ferrari) 1:25.339 (143)

5. Jenson Button (McLaren) 1:25.590 (101)

6. Pastor Maldonado (Lotus) 1:26.705 (140)

7. Max Verstappen (Toro Rosso) 1:26.766 (139)

8. Daniil Kvyat (Red Bull) 1:26.965 (84)

9. Nico Hulkenberg (Force India) 1:28.412 (77)

No, that's not the answer to the question, "what does it take to survive nine hours of blogging on F1 testing?"

It is in fact the distance Toro Rosso have gone in testing, as this tweet, external explains: "As @carlosainz completes lap 10 of day, it's 1000 laps in testing: 4573kms, nearly 35 Million @redbull cans in a row!"

Image source, Toro Rosso

"There are only two more days of the permitted 12 preseason testing days to go. What a difference to years gone by when there were no limits on testing and the big teams would test for days on end."

Image source, Knutson

Right, the lads have been out there for 60 whole minutes now. Here's the top three as it stands.

1. Lewis Hamilton (Mercedes) 1:26.110 (20 laps)

2. Kimi Raikkonen (Ferrari) 1:26.532 (19)

3. Felipe Massa (Williams) 1:27.271 (12)

Just as we were starting to wring our hands over McLaren, Kevin Magnussen noses the MP4-30 out of the garage to complete an installation lap.

Andrew Benson
Chief F1 writer

"Finally, McLaren have done some miles. In one day on Friday, Jenson Button managed 100 laps - that is pretty much exactly half the entire total of their previous running throughout nine previous days of testing.

"McLaren are still way behind their key rivals in terms of understanding their car - Mercedes have been doing that sort of mileage every day - but as Button said: 'It's a starting point.'

"He added: 'It's a shame we've missed so many days, but were on the right track now and it's definitely progress. We have a lot of work to do still. We know we're not the quickest guys out there. We have a lot of work to do with set-up and getting the maximum out of the power unit, but you'll see a lot of improvements out of us before Melbourne.'"

Image source, Getty Images

Some of these guys aren't hanging around today. The times are nothing special but the miles are already mounting up.

With just over half an hour gone, Kimi Raikkonen's Ferrari has done 16 laps, the Force India of Nico Hulkenberg 14, Lewis Hamiton's Mercedes is on 15 and the Red Bull of Daniel Ricciardo 10.

The only car not to set a lap is that of McLaren's Kevin Magnussen. After completing 100 laps with Jenson Button at the wheel yesterday, let's hope this is not a sign of fresh problems for the team.

Andrew Benson
Chief F1 writer

"Force India had to wait until three days before the end of testing to run their new car, its build delayed by cash-flow problems. But at least when it ran, it did so flawlessly, Nico Hulkenberg completing 77 laps in one afternoon.

"As the driver himself said: 'That is quite remarkable.' Performance-wise it was nothing to write home about, but first days are always about box-ticking. There were a lot of baseline checks today and getting a feel for the car.'

"The German has another go on Saturday before handing over to team-mate Sergio Perez for the final day on Sunday."

Image source, Getty Images

Sauber on Twitter:, external "Marcus is going out for the installation lap."

Image source, Sauber

Mercedes on Twitter:, external This fella is ready to rock, that's for sure! Good morning @LewisHamilton - let's do this!"

Image source, Mercedes