These new tranny's are TOUGH. There is a 275 tune out now and people have been abusing them without hurting tranny's.
I guess the results are going to show when you get to 80k miles like the older models.
I took a sled trip and the computer told me I was averaging 21. However, I put in 23.7 gallons and was JUST at 420 miles.My computer tells me I get 21 as well..........
Doesn't sound like 21 to me. Comes out to 17.7.
Computers LIE.
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