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Transmission Retarder
Maybe this has already been discussed,
But sitting at Marathon, I learned that Marathon has switched over to the Transmission Retarder over the Jake Brake. They have three new 2016’s here, and one is getting delivered today. Very nice!
Anyway, my question: I understand what the Transmission Retarder does, using six gears to slow the transmission, but what is the difference between using this retarder and simply shifting the transmission down manually on the key pad? I believe this is essentially what the Jake Brake does, but it only has two positions so is somewhat less effective than the transmission retarder.
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