Fleet equipment and fuel diversification has led to a more complicated maintenance shop. E-commerce has forced the hands of carriers that, to provide end-to-end customer service, have increasingly turned their Class 8-only fleets into a mix of vehicle weight classes, even down to Class 1 small vans, and that has meant different engine oils.
The fuel mix has added additional complications. Diesel vehicles have traditionally required one type of engine oil, gas vehicles another and natural gas a...
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