Separates Solids From Lubricants in an Engine

This page is the CodyCross answer for the clue below from Fauna and Flora, Group 169, Puzzle 4 (Law of the Minimum).

Question is: Separates Solids From Lubricants in an Engine

and the answer is: OILFILTER

Word Meaning:

OIL FILTER — (engineering, automotive) A filter designed to remove contaminants from engine oil, transmission oil, lubricating oil, or hydraulic oil.

Definitions from Wiktionary.