780,000 miles on Turbodiesesl with Zero Problems

   / 780,000 miles on Turbodiesesl with Zero Problems
  • Thread Starter
#2  
That MBE 900 engine is actually a German made Mercedes Benz turbodiesel that DD sells.....
 
   / 780,000 miles on Turbodiesesl with Zero Problems #3  
That's great, but is this anything unusual for heavy truck engines? I think cold starts and internal condensation are major killers for car/personal vehicle engines.

Not to mention that the MB diesel car engines from the 1980's have a reputation of outlasting the rest of the vehicle - and going towards 1M miles if the vehicle itself is kept up and used.
 
   / 780,000 miles on Turbodiesesl with Zero Problems
  • Thread Starter
#4  
Z-Michigan said:
That's great, but is this anything unusual for heavy truck engines? I think cold starts and internal condensation are major killers for car/personal vehicle engines.

Not to mention that the MB diesel car engines from the 1980's have a reputation of outlasting the rest of the vehicle - and going towards 1M miles if the vehicle itself is kept up and used.


This is only a medium truck engine @ 7.2 liters, but you are right, condensation and the habits of personal vehicle drivers are major killers. However, adulterated diesel fuel is also a major killer and this truck was equipped with EGR and a dual turbine wastegated turbocharger, even with the extra heat and soot levels from the EGR, the turbine bearings still were in perfect condition and they hit over 210,000rpms routinely, indicating the use of high quality oil and oil filters as well as air filters.
 
   / 780,000 miles on Turbodiesesl with Zero Problems #5  
That kind of mileage is not that uncommon for a over the road truck. Class 8 truck engines that are well maintained can easily get over 1.5 million miles between inframe overhauls. I think CAT has a couple that have gone over 3 million miles before the first overhaul. CAT even has a million mile club for CAT engine owners that have gone over 1 million miles on their engines.

Look at the expected engine overhaul time intervals for the majority of Class 8 truck engine manufacturers in the following link on page 2. All are between 850,000 and 1,000,000 miles.

http://ohe.cat.com/cda/files/176406/7/LEDT3136-01.pdf
 
   / 780,000 miles on Turbodiesesl with Zero Problems
  • Thread Starter
#6  
780,000 miles has got to be at least 10,000 hours of operation if not 15,000 hours.

Here is the Detroit Diesel MBE 900 engine brochure.

http://www.detroitdiesel.com/pdf/engines/3.21_2007_MBE_900_Brochure_FINAL.pdf

They recommend CJ-4 oil for 2007 with the low ash for the diesel particulate filter. And oil and filter changes as follows:

Severe Duty - 6,000 miles

Short Haul - 15,000 miles

Long Haul - 20,000 miles


We change the CJ-4 motor oil in our Mercedes Blue-Tech turbodiesel every 10,000 miles, it has the new diesel particulate filter.
 
   / 780,000 miles on Turbodiesesl with Zero Problems #7  
That looks like an uncharacteristically small air intake...with a throttle plate in it, no less. For regeneration, they say. It would work well as an anti-runaway engine device too, if the operator had any control over it.
 
   / 780,000 miles on Turbodiesesl with Zero Problems
  • Thread Starter
#8  
That is how the Diesel Particulate Filter on our Mercedes is regenerated.

There is a backpressure monitor closed loop feedback to the ECU. When the backpressure gets to a certain point, it simply injects more fuel (primarily into the late injection crank window to extend the burn using the multiple injection event electronic piezo injectors) which raises the EGT enough to burn all the soot particles out of the DPF.

It first came on around 3,000 miles brand new and sounded like some kind of afterburner effect for about 4-5 minutes, a noticeable "roaring" sound kinda like a cresote fire in a woodstove chimney. Probably reduces fuel mileage a little bit when it occurs.

As long as you use only ULSD, it doesn't even need to be checked until 90,000 miles and should be good for over 250,000 miles, but if you use High Sulfur Diesel Fuel or a non CJ-4 motor oil, you will be footing the bill for a new $3,000 exhaust filter......
 
   / 780,000 miles on Turbodiesesl with Zero Problems #9  
I wish I could get the link to open

the reason they have to brag up the MBE900 is because it is primarily intneded to replace the series 50, which had many EGR related issues.

My employer woulda been one of the first groups to buy they MBE' 900s in our vehcilces, if we woulda stayed with Detroit, but we went the Cummins route this time.

told em to shove it, basically.
 
   / 780,000 miles on Turbodiesesl with Zero Problems
  • Thread Starter
#10  
Scope this Ultimate Pick Up Truck out with the Mercedes Benz MBE900 turbodiesel engine in it!!

P2_2.jpg


The P2XL 'ultimate pickup truck' features a standard full size pickup bed on a Freightliner M2106 chassis. It's powered by a 7.2 liter Mercedes-Benz diesel, the OM926 DE72 LA, called MBE900 in North America, producing 330 hp at 2200 rpm and 1000 lb-ft of torque from a low 1300 rpm.
 
 
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