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CRD's diesel particulate filter (DPF)
2008 Jeep Grand Cherokee Limited Diesel 4x4

From Christine & Scott Gable, About.com Guide

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2008 Jeep Grand Cherokee Limited Diesel 4x4 diesel particulate filter

This device captures and incinerates diesel soot to keep it from being exhausted into the atmosphere.

© Adrian Gable

Read more: 2008 Jeep Grand Cherokee CRD test drive and review

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