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#1
05-20-2003, 11:39 AM
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Who uses diesel additives (W123 era cars)...opinions? Thanks
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#2
05-20-2003, 12:19 PM
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When I first got my "79" 240D it had a nailing condition when cold. I used a couple cans of Red Line and then added Pro Tec when fueling up for a month or two. The nailing cleared up after the additives and a little hard driving topped off with the Molly Lube treatment. I haven't used additives since then and don't plan too unless an anti algae treatment just for good measure.
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 1985 Euro 240D 5 spd 140K 1979 240D 5 spd, 40K on engine rebuild 1994 Dodge/Cummins, 5 spd, 121K 1964 Allice Chalmers D15 tractor 2014 Kubota L3800 tractor 1964 VW bug "Lifes too short to drive a boring car"
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#3
05-20-2003, 12:59 PM
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I use Stanadyne Performance Formula for every fill-up of my Jetta and Benz. It makes me sleep better at night.
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83 M-B 300D- daily driver 83 240D gray market 2002 VW Jetta TDI- beater
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#4
05-20-2003, 01:23 PM
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I have used Red Line d.f. Catalyst since I first started driving Benz diesels. I had a friend that put over 300K miles on his W115 300D and convinced me it was beneficial, and it seemed to reduce nailing in my first non-turbo diesel. I used to buy it by the gallon jug then refill into the small 10 oz bottles, but after spilling some of it on the garage floor (it kinda stinks) I stopped that mess and now buy it by the case: http://www.importpartsspec.com/shop/mall/redline.asp
Dieseldiehard '71 220 (gas) - latest project '79 300TD w/ '85 turbo engine @ 279K '83 300D @ 267K '85 300TD @ 260K all daily drivers
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#5
05-20-2003, 02:26 PM
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I have been using the Power Service additive. The fact that it claims to remove a small amount of water with each use helps me justify it beyond the other benefits.
What is a good product for decarbonizing prechambers? And if they are pretty badly carbonized, will such an additive continue to slowly eat away the carbon? Ken300D
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-------------------------- 1982 300D at 351K miles 1984 300SD at 217K miles 1987 300D at 370K miles
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#6
05-20-2003, 03:34 PM
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On the prechambers.. the MB FSM suggests a brass bristle brush.
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#7
05-20-2003, 03:55 PM
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Both my old diesels get Stanadyne Performance Formula with every fillup. Like he said, it makes me sleep better at night.
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#8
05-20-2003, 05:06 PM
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Water, smoke...
...I use Power Service about every third fill-up, mainly because of people on this forum suggesting it. But also, I have a couple of friends locally that have gotten bad fuel with water in it, and the Power Service claims to remove the water (I guess it has alcohol in it). Its cheap and also seems to have taken care of the rare billow of smoke I see in my rearview when I punch it at night.
Another thing I noticed is that a lot of people only will buy diesel at truck stops, and other specific locations. Then there are others that burn SVO, WVO, Kerosene.......To me, one of the neat things about a diesel is the universal nature of the fuel. I figure I can put crap in it if I condition the crap properly 
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#9
05-20-2003, 07:00 PM
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w123
Redline additive for my Diesel.
__________________
1979 300D 220 K miles 1995 C280 109 K miles 1992 Cadillac Eldorado Touring Coupe 57K miles SOLD ******************** 1979 240D 140Kmiles (bought for parents)  *SOLD.SAN FRANCISCO/(*San Diego) 1989 300SE 148 K miles *SOLD
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#10
05-20-2003, 07:47 PM
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I use Redline in every tankful of diesel. I used Stanadyne for a while when I couldn't source Redline and it seemed to do the job.
I refill the small bottles from the gallon jugs at a small cost savings, but as Dieseldiehard says, don't spill any. The smell lasts longer than the product! Wes
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#11
05-20-2003, 09:23 PM
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I use Redline when I can get it. Its not available around the Brandon, Miss. area. Power Source if not. I really can't tell the difference in performance between the two. I use these additive due to the advise on this forum.
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'88 300 sold '83 300cd
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#12
05-20-2003, 10:07 PM
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Red LineŽ Diesel Fuel Catalyst. I use the gallon jugs and add two glugs direct from the jug per fill-up. It gets a little hard to get the last glugs out of the jugs. So I go ahead and start the new jug and then when there is room, I pour the last of the old jug into the new jug. I do it at the fueling station so I don't spill it at my place.
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1983 240D 4 sp manual 260K
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#13
05-20-2003, 11:26 PM
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I was using Stanadyne Performance Formula in all my vehicles but it is a bit pricey. I recently switched to Howes Lubricator Diesel Antigel treatment. It claims to do all that Stanadyne does, is about 1/2 the price, smells WAY better, etc. So far so good. No changes. I use the additives as cheap insurance that the fuel is adequately treated for antigel and the added lubricity and water removal cannot be a bad thing. I may jinx myself but I have never had a fuel related problem in 4yrs of driving diesels. RT
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When all else fails, vote from the rooftops! 84' Mercedes Benz 300D Anthracite/black, 171K 03' Volkswagen Jetta TDI blue/black, 93K 93' Chevrolet C2500HD ExCab 6.5TD, Two-tone blue, 252K
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#15
05-21-2003, 12:44 PM
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I just went through a can of Amsoil in my w123, and let me tell you, it got rid of the knock I had, and makes the car run just a little better. I've used DFC, and the Amsoil smells exactly like it, so, it could be very similar. I was skeptical at first using a different brand than Red Line, but really, it just gets burned anyways.
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