I recently bought lexus gs450h 2007 with 225k km on it, it drives amazing no complaints but when I floor it at around 70-80mph it has almost 2 second delay when it shifts to second gear. (Lo-hi) gear. Any suggestion what is the cause? The gearbox oil been changed around 150k km, I tried to disconnect battery and put it back didn’t work. Also the 0-100 is around 6.2 sec. But it has all season tyres so it might be the reason its little bit slower not sure..