to Jonesy. ...Didn't have any battery acid,so tried a bottle of London Pride bitter...same stuff

Cheers all.
Your Dad does good cos I swear by white vinegar for all evils..Top tip for ya microwave, put a 1/4 of a cup of white vinegar in the micro for around 3-4 mins and it loosens up all the shite in there if you're a lover of pizzas etc! I found this out after my stepson left a mangled mess when we were away.It simply wipes off no fuss. White vinegar is brilliant on all things you need to degrease....Sorry, didn't mean to hijack your thread.....grovel...grovel........MJONESY wrote:my dad cleans blocked gas boiler jets by boiling them in white vinegar, may be worth a go?