shahrul_azmil3

Hi Azimil, thank you for asking. Yes, some oil needs to be retrieved to make space for about 300mL of MSP if necessary. For first treatment, 10% of MSP is needed because some MSP molecules are used to clean up deposits and pollutants, the rest of MSP is required to build a micro layer of protective surface over engine surfaces. Subsequent treatment could be less. Normally the extended oil change is few times more. For your engine oil of 3.1 liter you need 10% of 3.1 liter which is 310mL(about 1.3 bottles of MSP). I could bring down the price for two bottles of MSP to $64, waived $4. Hope that is ok. Thanks! Ben