OK the results.
1 litre of distilled water. Injected into the brake vacuum line. Caused a check light as it only has a MAP sensor , no MAF , so with the vacuum gone it can't run! (so now you know how to disable a car with just a MAP sensor!)
The before and after pics of the piston were rubbish as I only saw the before pic it has now gone forver. You could see that some flakes had come off and it was slightly cleaner. I estimate though you'd need to to 2.5 litres a week for 10 weeks to see much difference.
The stupid camera was set up to save again under same file name. Thereby erasing what you did the last time. Nice firmware work.
Anyway i did see 10psi gain in static compression (1 cyl tested) but this could be a blip.
The real proof is the Race Technology AP22 data. Good little box this. Had it for 10 years. Always works. Uses virtually no battery.
2 runs only. Always room for improvement on either one but tried to keep everything I could control equal.
Run 1 - dirty - 11.65 sec max HP 96
Run 2 - clean - 11.7 sec max HP 94
So in essence as you'd expect - 1 litre - no real change - as your engine would munch through much more than that in a day anyway.
