Cleaning oil for older powerstroke?

Messages
1,963
Location
Muncie, Indiana
That oil could potentialy save an engine thus saving owner a lot of money and labour in engine rebuild, high price for oil yes but engine repair is a lot more money...
It makes sense to fill the sump of a Cummins powered big rig once every 150,000mi or so that's making you money but dropping nearly $400 on an oil change on a 7.3 that sounds like it's running fine but the owner is just obsessing about engine cleanliness is probably not a great use of resources and that $400 would probably be better spent on other issues that were noted rather than obsessing over how clean the engine internals are.
 
Messages
556
Location
The American West
If you're getting that kind of mileage and it runs like it should, there is no need for short OCIs to "clean" it. Just run it, do 5k changes on the HDEO of your choice, and go forward. Motorcraft 15w-40 has a little better add pack than Rotella as far as phosphorus and Zinc, but Rotella is fine. The 7.3 is a stout motor. Just don't do long intervals because it is an HUEI engine and clean oil is paramount. 3k is too short, unless you just like changing oil for fun.
 
Messages
699
Location
TX & ON
Like what? I never heard of engines fail due to excessive idle. Pehaps they clog up EGR faster due to less efficient combustion.
A diesel engine's longevity is relatively affected by extended idle time, if unassisted by say, a coolant heater during overnight idle, for example.

The link below is a bit nit picky, but the basic info is solid.

 
Messages
8
Look into Amsoil Marine/Diesel series-its the only stuff that stays in our '07 6.0 which we bought new, motorhome -also check out Stanadyne Performance additive, 150k zero oil consumption and original injectors plus about 60% better fuel economy than the V10. The big BUT is that in the vans the PowerJoke has very limited room for the radiators and air filters and had to be detuned big time-changing the upper fuel filter is a ; treat.......
 
Messages
853
Location
Alaska and Wisconsin
A diesel engine's longevity is relatively affected by extended idle time, if unassisted by say, a coolant heater during overnight idle, for example.

The link below is a bit nit picky, but the basic info is solid.

In the oilfields and along the Trans-Alaska Pipeline, diesel trucks and equipment are kept running around-the-clock for days and weeks at a time when temps hit -30 to -35 degs F. Back in the late 90's and early to mid 2000's, I remember a few of our pipeline diesel service pickup trucks (Chevy and Ford 3/4 and 1-ton) running for a rough 90k to 100K miles before being sold.

I must admit that these trucks were serviced often, sometimes every two-weeks to 1 month for oil changes and other service items (we field technicians drove their trucks an average of 2500 to 3000 miles every two-week hitch). They were reliable in worst the arctic had to dish out -- and the arctic dished it out. I saw blizzards where I couldn't see past my hood, creeping and feeling my way down ice-roads. I entered into a windstorm where I should have been blown off the road, flipped, and killed -- winds estimated at 130 to 150 mph at 0 degs F (my F-350's cab-high Snugtop cap was RIPPED off by the windstorm). I've driven in small convoys where the pump station temps measured -55 to -65 degs F. All these were braved to keep the pipeline's fiber optic data transport network carrying its SCADA traffic working and an estimated $50M of oil per day flowing. The harrowing stories abound, but these are the highlights. I thank God for great mechanics (paid well!) and expertly maintained arctic-outfitted work trucks, to include the arctic-rated fluids used.
 
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Messages
371
Location
Reno, Nevada
I think you’re likely charging at windmills wanting to clean up an already clean engine. Although it’s awkward getting to the rear bolts(not sure about an ambulance) I’d pull one of the valve covers and take a look. I would not add anything like MMM or Seafoam, the high pressure oil pump runs at 2500 psi or so and does not like additives.
 
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Messages
556
Location
The American West
Excessive idle does NOT hurt the older emissions diesel engines. I call BS, no matter what any article says. real world to me, of which I have alot, shows me that "well oiled machine" applies to the older diesels (7.3, 5.9 Cummins, etc). As long as they are maintained well, engines with high idle hours do not affect longevity of said motor. Ask the guys, like myself, who have very high mileage engines that run impeccably. Throw an EGR or DPF on there, different story. One of the BEST running 7.3s I owned came off of a drill rig company that idled and ran from 6am to 8pm at night, every day, for a few years. I bought it, drove it for another 3 years and 100k miles and then sold it to a buddy. It still is running very well, no new injectors, no engine rebuilds, nothing. Just oil changes, a clutch, good maintenance, and keeps on trucking. The ones that are "weekend warriors" or have been "babied" will make me runt he other way as fast as I can go. been there, done that.
 
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