detergency การใช้

The other situation arises in detergency.
"We feel high detergency is preferable, " said Douglas McGregor, an emissions compliance engineer for BMW.
The different quality levels set requirements with regards to properties such as minimum detergency, maximum smoke and maximum deposits.
"We've just felt for a long time that gasoline detergency was not at a proper level, " said Andrew Buczynsky, a GM fuel engineer.
Shell Oil estimates that 60 percent of the fuel sold in the United States is at or near the " EPA minimum level of detergency " and says that has caused problems in some cars.