Important quality control step to determine if a power-steering unit functions according to the specifications.

• Exact performance is not fully demonstrated.
• Malfunction may occur during testing.
• Because of the left-over contaminated oil after in-house test, the tested item may be returned.

On the test stand, both testing of a device function and cleaning of its inside are taking place simultaneously. Thus oil while testing may get a large amount of washed off contaminants.

• Metallic abrasion powders.
• Abrasives adhered in the prior step and other kinds of solid materials.
• Atmospheric dust powders.

Oil name : Power steering fluid
Oil quantity : 390L
Oil cleaner : EOC-R50N

• Changes of contamination rate of the test stand oil

Days before	EOC treatment	4 days	11 days	30 days
Degree of contamination （mg/50ml）	27.8	0.8	0.7	0.7

• Because of the use of clean bypassed oil, no contaminants remain left in the system.
• All contaminants, regardless of their sizes, are removed, and thus the oil stays always clean.
• Costs associated with customer complaints will be nil.