Quote:
Originally Posted by JSH
An Allison automatic behind a Cummins engine is still the most common combination in the USA for Class 5 - 7.
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At least up to Class 6 nowadays in Brazil a 4-cyl engine is the most common. Some models use a Cummins engine. Mostly manuals, either Eaton or ZF when outsourcing is the case, and some AMTs more recently. Already a good measure to improve comfort, but a conventional automatic may be more effective to the integration with a brake retarder.