ORIGINAL: Rendegade
It was a joke. Just think of it as a strine similie, not unlike "dry as a dead dingoes donger" or 'Ugly as a half sucked mango seed". I have a sneaking suspicion that emoticons (smilies) belittle the intelligence of the reader, and whats more, they're like a laxative ( they irritate the $h1T out of me!) so I rarely, if ever use them. Just take everything I say with a grain of salt and we'll be right.
Now, as for the Prestone's, no I didnt use that, I used Tectalloy thinking that if it was safe for alloy engine components it'd be fine for the engine. May not have been my greatest shining moment of intelligence in hindsight.
Might have to get some Prestone's. Who sells it in Aus?
Ah Renegade, I now see that your an Aussie like me - so of course its taken as a joke!
Prestones is sold by Super Cheap mate and if in doubt as to the suitabilty with use on a particular alloy, then simply try it on a corner of the muffler.
But be warned, this stuff WILLstrip all paint and anodising, its that effective when used on a boil.
15 minutes worth of boiling got an engine that was so coked up you could not see the piston through the exhaust port perfectly clean.
The other point worth noting is the fumes - it must be done outside and keep your head away from the top of the container.
Cheers (mother wears army boots, mumble, mumble.........)