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Old 06-26-2006, 03:21 PM
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Join Date: Sep 2004
Location: Seattle, WA
Posts: 111
Less Sulphur = More Fuel Additives?

Recently began adding a cocktail of PowerService and Marvel Mystery Oil to the tank when I fill up. ('85 300sd)

For the past year, I have added a dose of PowerService to every fillup. Engine runs much quieter/smoother, and hills are a little easier to climb.

But, I was surprised how much smoother and quieter the engine runs when I add about 8oz of Marvel Myster Oil to the fuel. Quite the difference.

However, I am wondering about the long-term effect of using these products at every fillup. Is any short-term gain cancled by the long-term effects of adding these chemicals?

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Old 06-26-2006, 08:58 PM
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Join Date: Dec 2000
Location: Fairfax County, Virginia
Posts: 856
While it probably won't harm much, the long term effect is that adding all that stuff costs money that isn't necessary.
George Stephenson
1991 350 SDL (200K and she ain't bent, yet)
former 2002 E320 4Matic Wagon - good car
former 1985 300 CD - great car
former 1981 300 TD - good car
former 1972 280 SEL - not so good car
a couple of those diesel Rabbits ...40-45 mpg
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Old 06-26-2006, 11:09 PM
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Join Date: May 2005
Posts: 992

family dollar sells dextron for 1.25 try that in your tank you will be surprised
how smooth your diesel will run..

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