Something about diluting the engines source of lubrication bugs me.

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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine

The contents of Diesel Purge read:

Naptha, hydrodesulfurized heavy (what ever that is ), CAS# 27247-96-7 2-ethylhexyl nitrate, CAS# 68784-56-5 Benzene, Mono-C4-9-alkylerivatives.

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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine

Isn't that the same product we're all talking about? The only Sea Foam that I know of is a multipurpose product for both gas and diesel engines.

I believe the ethylhexyl nitrate in DP is the cetane booster and that's what makes engines run so quiet on it. Notice also there appears to be no alcohol in DP, unlike in SF. Again, you want to use Lubromoly's DP for purging or just use an in-tank, diesel-specific additive like Redline 85 Plus, Diesel Power, PowerService, etc.

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2004 VW Jetta TDI (manual)

Past MB's: '96 E300D, '83 240D, '82 300D, '87 300D, '87 420SEL

i love Power Service. IMHO it almost pays for itself with the better economy you get on it.

That's interesting because someone else on the TDI forum reported consistent mileage loss with PS. I haven't really done any objective testing but I never had the impression that PS or any other additive increases mileage. They certainly increase the cetane index (I can tell by the engine sound) and they may even help keep the injectors clean, but I doubt the mileage claims.

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2004 VW Jetta TDI (manual)

Past MB's: '96 E300D, '83 240D, '82 300D, '87 300D, '87 420SEL

i assume you mean tdiclub. I have an account on there as i drive a TDI as my dd. I would love to see this thread.

http://forums.tdiclub.com/showthread.php?t=189984

I'm not a big fan of PS myself. I once suddenly got a clogged injector while using it. I'm not saying it is the fault of PS, but at least I can say PS was not able to prevent it. I generally like Redline's diesel additives, and currently I'm also trying out the Diesel Power product line. Their cetane booster seems to work pretty well.

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2004 VW Jetta TDI (manual)

Past MB's: '96 E300D, '83 240D, '82 300D, '87 300D, '87 420SEL

I use Sea Foam in my boat engine. The high IPA concentration helps get rid of any water in the fuel. (IPA is Iso-propanol or iso-propyl alcohol or rubbing alcohol.)
Once every could of months I dump a bottle of Diesel Kleen in the 300SD. There's probably better stuff out there.
I've never put any solvents in the crankcase of any engine to clean it. Several fuel system cleaning solvent companies recommend this (like ChemTool). I think the engine's better off without it.

Seafoam probably won't hurt anything, but according to the MSDS it does not contain any solvents so do not expect it to clean anything.

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1969 280 SEC
1982 300TD

All three of Sea Foam's ingredients listed in the MSDS are considered solvents.

Seafoam per MSDS states that it is 60-80% pale oil (that would be a 20w viscosity light oil), 20-15% isopropyl alcohol, and 20-5% naptha. Different models have different mixtures [amounts] of the same 3 chemicals.
If you believe this will clean the injectors maybe some chemistry is in order?

But is shouldn't hurt anything.

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1969 280 SEC
1982 300TD

Basic rule of solvents: "Like Dissolves Like"
The iso-propyl is a polar solvent and will dissolve polar compounds (like water and other molecules that have a charge and things like rust and metal deposits).
Naphtha is mainly straight chain hydrocarbons and will help dissolve deposits that have a long, unbranched carbon chain.
Pale Oil, as I understand it, is comprised of single and multi ring compounds. (Instead of the carbon atoms being connected to each other in a straight line, the carbon chain circles around and joins to itself, forming a ring.) The big ring compounds like PAHs (Poly Aromatic Hydrocarbons) will dissolve more easily in the Pale Oil.
Soot, gum and varnish deposits usually have a part of the molecule that is long and unbranched and part that is composed of rings. Get the system hot and the sludge would be even more inclined to go into solution. Then add some oxygen and ignite it and the deposits will be headed out the tailpipe.
It will clean the intake, valves, injectors but I believe the detergent type cleaners would do a better job. Like I said on an earlier post, Sea Foam's best feature is drying the fuel.

If you soak a clogged injector nozzle in the solvent of your choice for a week or so and try to dig the deposits out of the pintle hole you will probably gain a new perspective on products like DP or Seafoam.

If an engineering standards laboratory can't make it work under controlled conditions, your chances of success in your driveway are pretty slim. However, anything is possible and maybe you can cure cancer or something while you are at it.

If you drop those dirty injectors in a pressure cooker with your solvent of choice and run it up to say 200C for a couple of hours, you'll get a new prospective on clean. Of course if you aren't careful you'll get a new perspective on the afterlife

04 Diesel,

I just ran across this thread.

Redline Diesel Fuel catalyst,Power Service,Startron.