Indicating lubricant additive

作者: Sarah M. Cooper , Stuart G. Macdonald , Michael Weiner

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摘要: An indicating lubricant additive comprising a color-changable polymer having an outer layer of first color, and intermediate second color; sensing dipstick circuit housing, elongated body proximal end distal end, means disposed at said wherein in one embodiment, the detects change that is present lubricant.

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