mayo

I found a dollop of the dreaded tan coloured gunk under my oil filler cap today! So naturally I'm thinking is there a head gasket issue? This obviously indicates moisture is getting in somewhere. After looking into it a bit more it seems that this can be quite normal when a car is used for...

Given the weather of late down on the southcoast, would you be concerned to find signs of Mayo on the Oil filler cap even after a long run (70 miles on the M25/M3). I first noticed it after leaving the car at Heathrow whilst in Thailand at the end of last month and put it down to the car not...