I’ve got a 21228 as well. I just crossed 10K miles.21228 here almost 8000 miles.
Just hit 5k miles and still strong. Definitely stressing the engine. Last weekend it’s was 107 degrees in the desert and I drove from 2200ft to 4500ft above sea level on a 2hr trip.1700 miles, Engine Build Date: 22066(March 7th 2022). Haven't heard any 22' failures yet, fingers crossed.
Wow! 42k! That’s a lot of miles! I have 22k on my 21228 2.7 engine and I thought I had high mileage.Look at all this flexing on mileage (and altitude)....
It's actually over 42,500 now.
I'm now at 11,700 miles, lifted on true 35's and still running strong... Averaging about 19mpg.1800 miles here so far.... Alive and kickin... Engine Julian date 21305. Nov. 1st.