Diesel Smoke - Add ATF - Mercedes-Benz Forum

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post #1 of 3 (permalink) Old 10-18-2006, 10:40 AM Thread Starter
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Diesel Smoke - Add ATF

I have a 1980 300TD Wagon and the gentleman I bought it from ( who had 8 ) said the way he keeps it from smoking was to put, I believe he said, ATF ( he had a thick accent ) - which I'm guessing was Automatic Transmission Fluid. Can anyone verify this for me and does it work?
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post #2 of 3 (permalink) Old 10-18-2006, 05:13 PM
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ATF was old remedy for cleaning the injectors and prevent fuel gelling in low temperatures.
It was used in those times, when in cold weather they started diesels with newspaper burning in the front of the intake.
Today nobody use ATF anymore, unless he wants to dispose ATF. Diesel engine seems to burn everything. One guy admitted putting used engine oil into his truck as a way of disposal.
I used to have 83 tdt and the "diesel purge" I bought on ebay helped to clear the smoke on it. Did zip on my CAT.
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post #3 of 3 (permalink) Old 10-18-2006, 09:53 PM
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Prolonged, frequent use of ATF in diesels, in high quantities has been known to cause injector coking.

If you want to keep it from smoking, just give it an italian tuneup every now and then. That means a full, pedal down to the floor takeoff to about 65-70mph. The heat generated will clear out the carbon, and diminish smoke. Also make sure you're using a good diesel rated oil. Shell Rotella 15W-40, and Chevron Delo 400 come to mind.

1981 300SD DB881 ext./code #236 leather int. aka: thistle green ext./olive int.
1982 300D, DB877 ext./code #135 mb-tex int. aka: petrol green ext./creme int.
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