Diesel Purge vs. Injector Cleaners Etc. - PeachParts Mercedes-Benz Forum

JEBalles · #1 10-03-2009, 07:33 PM

I've been looking to do a diesel purge and I went to great lengths to get the Lubro-Moly Diesel Purge specifically. When I just went to my local auto store, they had all these injector cleaners and diesel additives. Even Lubro-Moly carries an assortment of these cleaners and additives. What's the honking difference? There are so many...

oldsinner111 · #2 10-03-2009, 07:39 PM

Diesel purge is good for a better cleaning of carbon on injectors,pistons,valves,prechamber,ect..
Other products reduce the need for a purge.Purge is really needed when burning veggie,or wmo/watf.

oldsinner111 · #3 10-03-2009, 07:59 PM

what about prechambers?Lubro is used by Mercedes.My paper work while car was under warenty Lubro was used.

tangofox007 · #4 10-03-2009, 08:03 PM

Quote:

Originally Posted by LMN-

They are all junk, little more than lantern oil.

People who have actually used Diesel Purge probably have a different opinion. They have seen how dark the return fuel becomes and they have experienced how much better their engines run.

lupin..the..3rd · #5 10-03-2009, 08:08 PM

Quote:

Originally Posted by tangofox007

People who have actually used Diesel Purge probably have a different opinion. They have seen how dark the return fuel becomes and they have experienced how much better their engines run.

x2, with the LM DP product, the fuel coming back from the return line is almost BLACK! LM DP really works. But you have to use it properly i.e. run it straight from a separate container. It cannot be mixed into your tank.

JEBalles · #6 10-03-2009, 08:23 PM

Quote:

Originally Posted by LMN-

They are all junk, little more than lantern oil.

Take the injectors off the engine and get them physically cleaned.

Alright, smahtypants, can you tell me how exactly they clean them when they're out? Mechanically or chemically?

lupin..the..3rd · #7 10-03-2009, 09:35 PM

Quote:

Originally Posted by JEBalles

Alright, smahtypants, can you tell me how exactly they clean them when they're out? Mechanically or chemically?

Neither. Part of a proper injector rebuild is to disassemble the injector bodies and ultra-sonic clean them.

If you use a wire brush or any other mechanical cleaning method, well, congrats, you've just destroyed your injector nozzles.

awsrock · #8 10-03-2009, 10:49 PM

I was disappointed that my diesel purge did not become dirty at all

I guess that means I have a clean engine, though. I do use Howes Meaner Cleaner in each tank.
However, the DP did still make a bit of a difference, despite not returning black.

Cr from Texas · #9 10-03-2009, 11:25 PM

Quote:

Originally Posted by tangofox007

People who have actually used Diesel Purge probably have a different opinion. They have seen how dark the return fuel becomes and they have experienced how much better their engines run.

Clarify please. I thought the return line returned the fuel that was in excess of what the injector could deliver. Isn't it only cleaning the fuel system on the non combustion side of the injector?

tangofox007 · #10 10-04-2009, 12:03 AM

Quote:

Originally Posted by LMN-

Wow, the fuel turns dark, big shock. They've managed to clean a layer of slime off the inside of the fuel manifold.

So, you do admit that Diesel Purge has the ability to clean the fuel system. That would seem to contradict your earlier claim that the product is "junk."

Ian White · #11 10-04-2009, 02:15 AM

LMN, is that you, Forced?

mike-81-240d · #12 10-04-2009, 02:20 AM

Quote:

Originally Posted by Ian White

LMN, is that you, Forced?

X2?

Brandon_SLC · #13 10-04-2009, 02:37 AM

My return line durring my purge was mearely amber, with a few particles of soot here and there. It still made a big difference in how my car ran. I ran 2 cans through, then changed my oil to synthetic.

In the olden days I used injector cleaners, cetane improvers, etc. Engine ran better with them too, but my aging injectors soon returned to normal after a few tanks with no additives.

Had I had resources like this website, Diesel Giant, etc. I doubt I would have ever sold my 83 300SD. My cousin kept his 81 till one of his sons wrecked it in 2004. But he was much wealthier than I, so never flinched at maintenance costs. Because my engine no longer sounded as smooth as it had, I worried about a major repair breaking the bank.

Anyways, after using Lubri-molly purge, I'm a believer. When my mom followed me down to put the car in storage for the winter, about a week ago, she complained that my 240D was too fast! With no visible exhaust. I performed the purge in May and my engine still runs very smooth.

JEBalles · #14 10-04-2009, 10:41 AM

Quote:

Originally Posted by Ian White

LMN, is that you, Forced?

Yeah it's gotta be, just that manner of posting makes me think it is. Now that he's back, though, I see how much I missed him and his rowdiness.

Anyway, I'm going to do the diesel purge today and report back. We'll see what difference it makes, but I do think I might need new injectors anyway because I have a little bit of nailing that doesn't go away even after warm up. Should I have them rebuilt or just cleaned?