Is that something that would affect all 4? Been searching around on the internet but not getting anywhere fast.
I think I'll take off the rocker cover and see, as you said it's the cheaper option and hopefully the right one, the car only cost £500 so ain't gonna be forking out silly money on it.
My first thought was piston rings but for all 4 to go at exactly the same time? Surely not. I hope anyway.