a, pay attention to the type and nature of the parts of soil. Differences in the type and nature of auto parts dirt is large, there is sludge, scale, soot, rust and other solid oil and lubricating oil, grease and other residue liquid oil. Commonly used scale and rust descaling cleaner (RT-828) removed; other oil, grease and other available heavy oil cleaning agent (RT-806) cleaning.

b, preventing the parts from corrosion. For copper, lead, zinc and other parts susceptible to corrosion and precision instruments, meters and other parts, to use close to neutral, corrosive small, rust-proof and strong cleaning agents.

c, to consider washing conditions. If having a steam heating conditions, the choice of high-temperature cleaning agent. Hand-wash or main cleaning parts not heated, then choose low-temperature cleaning agent. When using mechanical cleaning and spray pressure to use low foam detergent.

d, note the concentration of the cleaning agent. The concentration of the cleaning effect of the cleaning agent has a great relationship with the general increase in concentration, decontamination capacity is correspondingly increased, but after reaching a certain concentration, decontamination capability not improved significantly. General concentration at 3% -5% is appropriate. If in accordance with product instructions formulated detergent concentration decontamination effect is not ideal, it should not increase the concentration of the cleaning agent, and shall be elected for other detergent formulations.

e, to master the cleaning agent temperature. In general, as the temperature increases the cleaning agent, which also will increase decontamination capacity, but above a certain temperature, but decreased detergency. Therefore, each of the cleaning agent has a preferred temperature range, the temperature is not higher the better. Especially non-ionic detergent, when heated to a certain temperature, the cleaning agent will appear turbidity, temperature at this time is called "cloud point", the active agent decreased solubility in water, some of the components due to heat decomposition and useless , decontamination capability but reduced. Therefore, the temperature of the non-ionic detergent should be controlled below the cloud point.

f, grasp the cleaning agent time. Preparation of a cleaning agent can be repeatedly used, its degree of contamination depends mainly washing parts with a cleaning agent, the amount of, in general, a detergent formulation can be used continuously for one week -2 weeks. In order to save the amount of cleaning agent, to improve the quality of washing, cleaning should be part feature, reasonable arrangements for the cleaning sequence. As the main part and not first wash dirty parts; wash dirty parts and secondary parts, which can extend the time cleaning agent.