Was given a Citroen Berlingo that I'm sure hadn't had any maintenance done to it for at least 3 years. When I started investigating why it would start so poorly I discovered that there was only 0.7l of droopy oil in it. Changed the oil, which fixed the 2 cylinder issue immediately. And when I swapped the black sponge that was once an air filter for a new one, the car fired right up as if it was brand new.
Pros: fixed 2 cylinder issue
Cons: poor starting
Vehicle:
Citroen Berlingo
Mileage: 7000 km