I posted this on the A522 site ...
Not overly technical but an interesting article "Nemesis water pump" from AMUS ..
https://www.auto-motor-und-sport.de/for ... sserpumpe/
I'm posting it here as well cause Rossi talks about excessive tire wear but doesn't mention that Alonso had gone 5 more laps(that's 25% more) on the same tires as Ocon. On a heavily fuelled car, that's alot of stress you're taking off of the 2nd set of tires. Alonso was lapping 3 tenth of second faster per lap than both Norris and Ocon with Stroll, at a similar pace, in between them. The extra 5 laps in the first stint would have opened the window for mediums on the last stint for Alonso. While Ocon fell to hards.