exchanged words in the McLaren camp after the race. Senna countered Prost's anger by stating that he had almost been pushed onto the grass by Prost before the first corner after the start. Prost's lead built up to 7 seconds and would last until the flag, while Senna was being troubled by an erratic (and ultimately false) fuel readout which was telling him he was using too much. This allowed Capelli to close right up on him. On lap 22 the Italian out-braked Senna to excited acclaim and opened up a gap on him. It was the first time all season other than when Prost suffered from severe misfires at both the British and Italian GP's that a McLaren-Honda had been passed on track by any other car. Soon after Gerhard Berger also passed the McLaren, leaving Senna exposed to the attacks of Nigel Mansell's Williams. The Briton was closer on the corners, but the Honda turbo was superior in the fast sectors of the track. Berger had claimed the fastest lap in his pursuit of Capelli, but spun off on lap 36. He had accidentally set off his fire extinguisher, with the resultant freezing of his leg with carbon dioxide causing his foot to slip off the pedals. Berger had been attempting a cockpit adjustment to his car but on the bumpy Estoril surface simply hit the wrong button. On lap 55, Mansell and Senna attempted to lap the Tyrrell of Jonathan Palmer: during this manoeuvre Mansell hit the back off the McLaren and spun into the barriers though without any damage to Senna who continued on. Maurício Gugelmin, Nelson Piquet (Lotus-Honda), Michele Alboreto (Ferrari), Riccardo Patrese (Williams-Judd) and Thierry Boutsen (Benetton-Ford) were hotly contesting the last point place in 6th. On lap 29 Patrese retired with a split radiator and the next lap Piquet retired with clutch and gearbox problems. On lap 57, Senna, still having problems with his fuel readout, pitted for a tyre change and was passed by Alboreto, Boutsen and Derek Warwick, falling to 6th. Prost won from Capelli, who at one stage was catching the McLaren, but backed off to save his engine after seeing his teammate's car sitting beside the track with a dead engine; the gap at the line was 9.5 seconds and Prost himself was marginal on fuel. It was Capelli's first podium finish in Formula One and the first time