I've been using the stuff for about a month in my Civic ... and all signs point to significant mileage gains. Another tankful or two and I'll post some results here.
I just ordered a 2nd can for the S2000.
Seeing that you will instantly see grey on the dipstick when using the additive at the 1 ounce (50ml) per quart treat rate, I suspect the ppm is much greater than 200-300. Or, possibly, the visible bits are merely counted as "insolubles" making the PPM count mostly irrelevant.
I just ordered a 2nd can for the S2000.
Seeing that you will instantly see grey on the dipstick when using the additive at the 1 ounce (50ml) per quart treat rate, I suspect the ppm is much greater than 200-300. Or, possibly, the visible bits are merely counted as "insolubles" making the PPM count mostly irrelevant.