4 oz justicebrothers engine tune up and diesel treatment per 35 gal of diesel.

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His 2000 TDI Jetta 5 speed
Hers 2002 TDI auto Beetle
Toy Mercedes diesel powered 1995 Jeep.
Work 2003 Cummins quad cab 1 ton

How does something that increases lubricity cause *additional* wear, instead of less? The whole point of lubricity is to avoid wear.

At least as far as Diesel Kleen is concerned, it smells a lot like petroleum fuel just with a few chemicals added, and it's a fairly common recommendation to fill a spin on filter with the stuff straight out of the bottle so the engine gets a straight shot of the stuff for thirty seconds or so until the regular diesel starts making it into the new filter. Can't imagine somebody wouldn't have noticed some type of trouble if it causes wear.

Not trying to be argumentative. Just trying to figure out the logic. If an additive is inferior to the parent fuel, then it can only drag the parent fuel down, not improve it. Therefore... there is a "negative return" to using it in ANY proportion. I'd think...

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~Michael S.~
Past cars:

1986 300SDL
1987 300SDL
1982 240D
1982 300SD


Current:

1987 300SDL

Sounds logical to me!

I LOVE the smell of Diesel Kleen! I also love the smell of bio...

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1984 300 Coupe TurboDiesel
Silver blue paint over navy blue interior
2nd owner & 2nd engine in an otherwise
99% original unmolested car
~210k miles on the clock

1986 Ford F250 4x4 Supercab
Charcoal & blue two tone paint over burgundy interior
Banks turbo, DRW, ZF-5 & SMF conversion
152k on the clock - actual mileage unknown

Youre talking two different kinds of wear. The wear that we think about due to the removal of sulfur is in the fuel system, IP, etc. Sulfur would effectively alloy with the metals in these components, creating a soft surface that was wear resistant. The aromatic bound sulfur compounds did a good job of preventing bad effects of metal on metal contact. Take the sulfur from the fuel, some of that can occur.

However, due to incomplete combustion of some adds, you can get residues down in the rings and then down to the bearings. Thus why you can see elevated soft metal wear when too much of some types of additives are used.

Dont confuse fuel-related lubricity to lubricating the moving parts of the engine.

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Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1985 190D (169k)
1991 350SD (113k)
1991 350SD (206k)
1991 300D (228k)
1993 300SD (291k)
1993 300D 2.5T (338k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (265k)

Past Diesels:
1983 300D (228K)
1985 300D (233K)

My receipe is 2 oz of Soltron and 10 oz TCW3 per tank.

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Charles
1983 300D, bought new, 215k+ miles, donated to Purple Hearts veterans charity but I have parts for sale: http://www.peachparts.com/shopforum/showthread.php?t=296386