bought a 2017 kw w900l

[Lonestar10]

More power = less engine life no matter who tuned it.

Hence why I kept my 450/1750 I'm almost 5k into my first oil change after demandate last oil change was 50/50 on miles (15k) with and without mandate and oil is just a slightly darker than then fresh with a 632k engine. And this little t680 at 78-80k has been walking new and old 379s, w9s, and 389s up some hills with 3.36s and me not going below 1450rpms on hills before downshifting. While getting 6.2-7mpg with open deck freight and cracking 7.5 when I slow down could do even better if I lived in flatter country but it's all up and down in the Midwest plus the wind this year always seems to be blowing the wrong way.