Hi i have had 1 or 2 issues with my Vectra 2.2 sri Auto, the last few days i have pulled off from a cold start and its almost stalled i have also notice when i come to a stop the revs drop, so decided to have look under the bonnet and noticed a very small amount of creamy sludge on the oil filler cap and in the expansion tank.

There doesn't seam to be any oil loss nor coolant and it doesn't seam to over heat, the car is under warranty and will be going back on Monday but wanted a little knowledge just in case i get fobbed off as the warranty expires on Wednesday.

Whilst on that subject if they say its one think and correct it and that doesn't work would the car still be under warranty after Wednesday?