I remeber something about less then 30mph average is considered extreme duty and engine oil should be changed more. I guess it never gets up to temp to clear out the water in the oil and other contaminents. I would guess a good way to tell would be to keep a record of the hours per tank with the over head and then adjust the oil changes based on how the truck was driven the last few tanks.

 

My hours are 3914 and the miles are 205559

Works out to 52.5 mph avg.

 

Just got a 06 two weeks ago. 53660miles/ 2722hours= 19.7. But truck drives and rides better then the 02 I had.

 

I'm 47449/1794hrs. 26.4mph, I never let it idle, I just drive a lot of 45-50mph roads around here. Glad I'm using paint stripper(PowerService )to keep my injectors clean.

 

how many hours is an inline 6 diesel usually good for?

 

Mine is an 06 with 22,900 miles & about 735 hrs. Works out to an average of around 31.1 mph.

 

109681 miles and 3169 hours, 34.61 mph. I guess that would be good for all the Houston traffic that I sit in. Someone said 10,000 hours before rebuild and I hope they are correct. That would put me at 346592 on the odometer. I would be really happy to get that far.

 

Well you figure big ag tractors can easily go for 10k hrs without a rebuild and thats at full throttle usually. So if our trucks aren't at full throttle 24/7, then it sounds like they really are "million mile" engines.

 

Just found this thread.... didn't know you could get the hours... I love this site, full of neat stuff

Mine is 79,922 and 1873 hrs = 42.67. I will take that, I usually do a weekley 800 mile round trip, and very little city maybe 50 per week.

 

i have 1675 hours and 55017 miles = 32.8 average miles per hour... seems slow... guess we all go thru alotta stop n go??

on the smarty jr. it says i have **** near 6000 key cycles... just some random info.

 

Lol, I read that and had to go out and try it. Looks pretty neat in the dark! Checked mine again, I'm up to 28085/758=37.05mph. Bout average I suppose. Now think of this, all those hours...that's your butt sitting in that seat! Kinda wierd when you think how much time you actually spend in there!

Brian

 

62492 miles and 2119 hours = 29.49mph about average I suppose. I wish I would have know about the hour meter when I bought the truck used.

 

Wife's duramax has 85000 miles and 2900 hours.

 

Im up to an Average of 42 mph

 

21,868 miles and 558 hrs = 39.19 avg mph