volvo780/ volvo D13 /2008 i just reached 1,300,0000 miles today

Trucks are like women, I treat her gently ,grease good and she treats me well also. I replaced injectors and turbo, no#in frame or other parts; I'm limited to 65mph (105km/h) Ontario truck limit law and use synthetic oil only, maybe this helps.Another team here at Celadon Canada has 1.4 mil same original 2008 D13 and Eaton 13 but Volvo 670.

 

Leaking injector cups are the biggest problem on this early D13 motors, not the injectors; I did the cups 3 times ; but last time in 2010 they issued a service bulletin and a kit of 6 new injectors+steel sleeves : this kits plus the installation job was free for trucks under 500k, and I was already over soo i had to
pay the labour about 2000$. After this we did over 600k miles without any problems with injectors;
Turbo actuator goes bad not turbo, I replaced the actuator at 5-600k, and last year at 1.1 mil miles was bad again, and I decided to replace whole combo turbo at this milage.

 

I did some ECM upgrade and tunning at this shop, nothing illegal, I still have my egr and dpf working, this works, I gained about 0.5 mpg. http://www.hillertrucktech.com/
But the mpg on the dash is off about 04-05 mpg ,, i have about 650-700k miles on this injectors and as are getting older the dash mpg is more off . After I took this photo I keep driving until I had over 1000 gallons burned , ; was a pump to pump test with over 1000 gallons to get it more precise, and I did refuel the first and last in same truck stop same pump # @QT in Greenville TX: the dash was showing 8.6..... real from all fuel receipts was 8.2 mpg ,thus included about 4 Regens ,my truck is running a regen @ aprox 2200 miles and lasts 23 min. and about 15-20 hours of idling because I don't have APU ,average weight approx 30,000lbs/ : I"m pulling mostly automotive parts from Ontario to Laredo and back , some loads are light for Volkswagen 15-20,000lbs but we pull also heavy TRW, Accuride, engines for Chrysler 43,000lbs ; The roads are flat on this route, 401, I-75 Ud-24 , I-69,70,57,55,30,35 this make a difference, if 'm heavy i slow down ,to 60-62 mph helps with mpg and less pressure on emission system.