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   Commercial Truck Forums

   Manufacturer specific forums for owners of semi trucks and heavy duty vehicles:

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   Latest: How to test the EGR valve? QUALITYTRUCK, Nov 9, 2024 at 10:06 AM

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   Heavy Duty Diesel Truck Mechanics Forum

   For mechanics and owners of shops servicing semi trucks and Class 7-8 vehicles. Repairs, troubleshooting and business advice.

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   Latest: Oil Analysis Help - X15 565/1850 blairandgretchen, Nov 10, 2024 at 12:46 PM

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