Saturday, December 26, 2009

Metered Air Freshener Why Do Trucks Have 2 Air Needles In The Air Meter?

Why do trucks have 2 air needles in the air meter? - metered air freshener

make the air flow in a truck on 2 needles, for example, a Mack cement mixer, a needle, green and orange needle. What is the needle 2 has to do with it?

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