chevy duramax disel
would to hear from owners of these as far towing and mileage thanks in advance for your replies
Forum Discussion
Old Duck wrote:
Mine is an 02 LB7, bone stock except the SB air intake I just installed this week (exhaust to come next month). I'm the second owner, purchased it in 05 with 42,000 miles, now has 98,000. Knock on wood, no injector issues yet but I'm planning to check my local dealer to see if they have records of having been replaced. The truck does everything I need and have no plans to make a change and actually prefer this body to the newer style.
After a bunch of research I purchased this to tow a 25'TT about 7000 ills. I'll always remember the first long hill I pulled, was 55mph at the bottom, easily pulled the climb and was at 60 at the top. I was impressed with the DMax. Then I went down the hill, never hitting the brakes and was even more impressed with the Allison tranny.
To help avoid injector issues. look at a FASS lift pump install, I was told part of this issue is poor flirtation and look for a gas additive called Hotshots http://www.hotshotsecret.com/wp-content/uploads/2013/01/HSS-Product-Guide.pdf. Apparently adding that every 6 months also helps. Quite a few videos about it on Truck U.Of course I found all that out after going through 4 sets.
It is unusual for a LB7 to go more than 75,000 K without injector issues. The tip off is white smoke on idle.
My 1st set went at 60K, the second at at 100K and the 3rd at 125K. It is 11 hours labor to get at them which means you need to replace all 8. My last failure I just replaced the one bad one since I had decided to dump the truck & I suspect I got a bad one when I had them changed the previous. I bought a dodge instead which I do not like as much, but its only an hour to change injectors on it.
BTW on my chev I got 14 mpg towing, 21 without a load (highway). I used optilube XPD and found it added at least 1 mpg after several tanks.
