ATF is said to be another injector cleaner.

__________________
82 300D....went to MB heaven
90 350 SDL....excercising con rods

Hi profit margin products pay for more advertising to create their own demand. This is a feel good product. Go wash your car and you will do it more good.

Read the factory shop manual for factual information on injector cleaning. Check recommendations from other diesel engine manufacturers if you are not convinced.

As a general rule, that is my opinion when it comes to most additives and "miracles in a can."

But I have never seen an ad for Lubro Moly products. If I had not heard about DP here, I would have never heard about it. So if they are spending all their profit on marketing, it doesn't show.

The first time I used Diesel Purge, it went in clear and came out black. So it must have been cleaning something. And my engine performance was most definitely improved. The second time I used DP, 6000 miles later, it went in clear and came out the same way. There was no noticable improvement in performance.

If spending $8 for a can of DP is going to lead to financial distress, don't take the risk. Just think, for that kind of money, you could fill you tank to the 1/8 full mark!!!

Rubbish! The factory manual was written decades ago and you leave no room for technological or procedural advances. Diesel puge works great! I have used it on almost every benz that has come through my shop and it always makes an improvement.

If you want to go by the factory manual ONLY then don't use modern diesel oil, or tools or fuel or etc. Insisting on living in the 1970's with its outdated technology is ridiculous. Move with the times and use the best products that is available at the timeI dont even think they had diesel purge in the 1970's....

__________________
1981 300D 147k
1998 VW Jetta Tdi 320k
2001 Dodge Ram 2500 141k
1979 300D 234k (sold)
1984 300D "Astor" 262k(sold)
Mercedes How-To and Repair Pictorials
I love the smell of diesel smoke in my hair

You sell the stuff, what else are you going to say?

Engineering standards organizations refuse to set standards for purge products. Diesel engine manufacturers don't endorse this product and rarely endorse similar products. They do endorse modern oils etc, useful products, they work. That is the difference.

Salesmen heartily endorse purge products.

Good rule to follow: always believe the guy that wants your money.

So make your case DG, technically.

Where in the Factory Shop Manual (FSM) is the procedure for cleaning the injectors wrong?

when brownie and red were suffering the efeects of bad home brew the ONLY thing that improved them was an application of seafom and diesel mixed to the lm spec of 65% diesel. red ran well enough that my wife noticed it immediately on the hwy.

__________________
currently
[1981 300 td tdidi 165500 dark brown/palamino-Brownie-mine-3k miles of ownership
1983 240d 162+++ Anthricite grey w/ henna red interior and hella lights-wifes car-Red

the above two cars are for sale
and can be seen on the cars for sale thread here. pix also available.


240d-144+ Manilla Yellow w/ palmino interior-greasecar kit-Blondie-the college kids car

23" gt 21 speed still on original tires-still got the nubs
21" khs tandem

There is plenty of sludge and other hard chemical buildup that can removed with DP. Lots of passages, valves, and orifices between the lift pump and the nozzle tip that can be helped with chemical cleaning.

Biodiesel is more of a solvent than petro diesel. That's why some people show some performance/running quality improvement after running B20/B100 for a few thousand miles.

I know what's in DP and I've seen with my own two eyes what kind of change two cans of the stuff can do to mechanical injection diesels.

Now, if you want near perfect injectors the only way is to pull them, check the spray pattern, set the pop pressures, and/or replace the pintle assy.

DP is NOT a cure, it's an aid. If you cant afford the $150 to swap out rebuilt injectors or don't have the tools to do a rebuild yourself, then DP CAN help as a temporary band-aid.

I'll admit, I've never used DP on my car. I used a rebuilt and matched set of injectors from Tom Judd.

DieselGiant speaks the truth.
EDIT: "Where in the Factory Shop Manual (FSM) is the procedure for cleaning the injectors wrong?"
None of it is wrong, it just uses ~30 year old techniques.

Where's the proof???


To this day, those are the only techniques that work.

You could run 50 gallons of DP through clogged injectors and it would not clean them. You can soak a clogged injector nozzle in DP for a week and it won't clean it. It just doesn't work.

My proof is in the cars I've used it on. Not just MB's. Even a lowly Ford Escort diesel showed a noticeable difference.

Not everything can be fixed with diesel purge. If the injector tips are worn or water has damaged the IP, no liquid can fix them.