Bongo Fury

"Well thankfully flushing out the heater matrix did the trick apparently. The mechanic was a bit concerned at the amount of gunk coming out of it but it's done and according to my daughter the heater is now much improved. Apparently the mechanic had some concerns that the amount of gunk which was flushed out..."

There can be a surprising amount of muck in them sometimes. Allan said he's convinced he flushed an elephant out once. A job worth doing.

Saw that on Blue Peter.

Doone wrote: Sat Dec 22, 2018 8:31 am "Well thankfully flushing out the heater matrix did the trick apparently. The mechanic was a bit concerned at the amount of gunk coming out of it but it's done and according to my daughter the heater is now much improved. Apparently the mechanic had some concerns that the amount of gunk which was flushed out..."

There can be a surprising amount of muck in them sometimes. Allan said he's convinced he flushed an elephant out once. A job worth doing.

That sounds very messy, was it a pink elephant