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What Is TBN?
Jul 17, 2017

TBN-Total base number,

Under the specified conditions, the amount of acid required to neutralize all the alkali components 

(including the strong base and the weak base) present in 1 gram of the oil sample is converted to 

an equivalent amount of alkali, expressed in mgKOH / g. The usual base value is the total base value. 

Oil will become acidic for a long time, and the acid will gradually corrode the engine, 

so the oil is generally alkaline. 

TBN is representative of the base value of oil, the higher the value of the oil can neutralize 

the more acid (this figure can not represent the durability of oil, 

because the oil speed of acid, the speed will be affected by the work of the engine),

But can make a reference index.