Cheers mate. I'm in sunny liverpool

Disco mikey I'm wondering if it only replaces the EXACT same amount it extracts, what if the original level is low for some reason ???

You get underneath and check the level, to ensure it is OK

There have been a few that have been a bit low after a flush, for some reason. Only by quarter of a litre or so, but still, the job needs to be done right

Thanks for the speedy reply I'll make sure it's checked properly then !