JLM Petrol Octane Booster

Octane Boosters; a lot has been said and written about them. But what are they actually good for and... do you (still) really need them? JLM Lubricants investigated this, came to surprising conclusions and, on the basis of these, produced its best Octane Booster to date.
Conventional petrol and gas engines burn fuel by igniting a mixture of petrol or gas and air with a spark. Use of incorrect or contaminated petrol, too heavy a load at low engine speeds or insufficient engine cooling can ignite the petrol in the combustion chamber without a spark at the wrong place or too early.
Features:
Boosts the octane number by 4 points (depending on the type of fuel used)
Cleans, lubricates and cools the engine parts
Reduces the eventual need for expensive repairs
Prevents excessive wear of valves, valve seats and valve sealing surfaces
Optimises engine performance
Reduces fuel consumption
Eliminates irregular idling
Essential for (young) classic cars