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cerma is a very interesting organic chemical.it is actually liquid glass lacking 3 things to turn it to solid [carbon,heat and water]despite the great engineering of mercedes benz,the quality of the metal surface of the bore and rings is one of being porous.this allows some of the combustion gas to go to the sump.utilizing cerma,which penetrates the metal surface to depth of 6 microns,over a distance of 700-1000mls will seal the combustion chambers[because it doesn't harden completely immediately] as the two surfaces lap in the best possible fit.now you have very very even compression over all cylinders.you don't have to be a rocket scientist to realise that power has now been increased.but the big improvement is that you now have access to higher torque earlier in the rpm band.[remember torque gets the car down the road, horsepower maintains the torque] the less rpm used the less fuel used. now that combustion chambers are sealed some more great things follow.heat is contained,utilised and sent down the exhaust [instead of heating the oil and bottom end of the motor]so the engine cooling system doesn't have to work so hard,gases are more completely burned and a check of the tail pipe at your friendly inspection station will reveal about 50-60% less polutants than before.the application of cerma will also all but eliminate engine harmonics[my car felt as though a cadillac suspension had been fitted to it as i never realised how much engine harmonics affected normal driving down the freeway.finally this is a one time treatment that will dramatically extend the life of the engine[i hope the manufacturers don't send luigi after me]
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