Apparently Millers Ecomax can get you through the test. It claims to 'drastically reduce CO2' https://www.motorworks.co.uk/vlive/Shop/Parts.php?T=5&NU=15&M=91&Ct=EN&SbCt=BA_15_91_EN_20&spPage=2
You could also throw some Liqui-Moly shooters in the fuel. They make a fairly big difference on smaller capacity engines.
Does cleaning the fuel system reduce CO2 emissions? I don't understand this stuff.
Not sure that works as small cylinder bikes have quite small jets that block easily.
Didn't 5th gear do a fuel test thing on a car and redex seem to work the best. But that could have been because it was the first.
@pdlouche started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
Apparently Millers Ecomax can get you through the test. It claims to 'drastically reduce CO2' https://www.motorworks.co.uk/vlive/Shop/Parts.php?T=5&NU=15&M=91&Ct=EN&SbCt=BA_15_91_EN_20&spPage=2