Answer to "How can I tell if my engine needs an overhaul?"I wanna ask about my d12, if anyone might know. I have 1.5 million. Oil consumption is low, pre purchased with a dyno, tested at 83% cwhp. Oil consumption is low. 1 gallon per 15k miles. Oil samples are looking great. Fuel mileage is 6.7 mpg average coast to coast, NW to SE and everywhere else, on with Landstar. So, can I anticipate a rebuild before it actually needs one? I know there's one gentleman around here that's got 1.8 original and still going.
Answer to "swapping rear differential from 20000lb to 23000lb"Just to add and verify, the 20 k axle Kevin said on the radio a couple months ago they really a heavy duty axle anyway and that they'd do the job. The question is, how much would a 20k axle with 2.64 gears run?