So Ferrari, Merc, several other teams have brought along better cooling engine covers for Bahrain/hotter races, almost everyone can see temp issues and they are all solving them but Red Bull, stubborn, or arrogant, seem to think they don't need to?
Other Renault teams have had problems but they've moved on and improved from the first test dramatically where Red Bull haven't. Lotus had almost caught Red bull in laps in test 2, Caterham are having a bit of a laugh at the other Renault teams in terms of amount of running done. TR are racking up the laps and Lotus aren't doing too badly.
It's looking more and more like Red Bull are going to end up having to make fairly significant changes to the car, bigger side pods, engine covers with more venting and they've just stubbornly refused to do it yet.
Thing is with the way the car is I'm not even convinced they'll get a lot of running done at Melbourne. Less than 1.5 days of testing left and they not only haven't come close to a race distance test, they can still barely get out of the pits.