wegras said:
The 2 x struts are damping to stop it flying up dangerous :roll: ....there is no assistance on the boot as far as i know
Coupe and roadster are different as well I suspect.

oke: The pressurised gas probably loses pressure over time, also perhaps not as vigorous in the autumn/winter due to the gasses contracting? Maybe I'm talking rubbish but it certainly seems that way on my merc too.