On 11/01/2011 13:53, Ronald Raygun wrote:
Fredxx wrote:

I have a perfectly good chip fryer that is coated with caked-on old
sunflower oil.

It's sufficiently hard and thick that the detergents I've used haven't
touched it.

In the end I have put it all in the dishwasher and put it through a few
washes. Some of the crud has become emulsified and almost peels off like
latex. But there's a lot more to go and don't relish the thought of
another dozen or more washes in the dishwasher!!

Are there any detergents which successfully dissolve this type of stuff?

Caked-on oil is similar to varnish, so Nitromors is worth a try.
On the other hand, why bother? If it doesn't adversely affect the
frying, just leave it alone.

On a gas hob, it will make the pan very slipy and dangerous.

Dave