Wynn’s “Total Action” petrol cleaner comes in a 325 ml bottle. 2 bottles are supplied for a Bongo tank and this will last for 3 fill ups. Excellent reniews for this product online.
The manufacturer claims that it “keeps the fuel system clean from fuel tank to exhaust pipe…..cleans injectors, restores performance and reduces emissions.”
Suitable for E5 and E10 petrol.