engine upgrades

Retrofit-DPF sales to satisfy California regulations lag

The total number of verified DPFs sold by companies for diesels operating in California in the first half of 2013 was 3,508 and includes both passive and active DPFs.

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Owner-operators: How are CARB rules affecting your business?

With 1996-2004 model-year engines current under DPF retrofit or upgrade requirements and 2005-06 engines coming under the fun in January, this poll looks at owner-operators' current California strategy.

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