How many miles on your Cat C7

Not a C-7 but a 3126B. Just turned 86,000 and the only problem I have every had was the pre heater for the engine sensor went out at 36,000 miles
Just did a 2,000 mile trip and averaged 8.5 mpg. towing a 2003 Honda CRV.
Lots of power for my needs. 2000 Harney
Busyguy