I am just wondering how many people out there just pour in 2 full gallons of motor oil as opposed to measuring 7.4 quarts?

Please, lets not creatively find a way to make this into a Dino VS Synthetic thread...

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1996 (W210) E300D 86K - Traded in for a Lexus
1992 (W124) 300D 2.5 Turbo 202K - Sold
1983 (W123) 300D, 146K - Sold
1970 280S, 263K - Sold - Beginning of addiction

What are you putting it into? My 300D manual says 7.9 US quarts for an oil/filter change so two gallons seems good to me... RT

7.4 quarts is right for your car, the 300D 2.5 Turbo. So I guess it'd be fine to make things easier and fill it with 7 and a half.

I don't really do my own work, but I take two gallon jugs to my independent shop and invariably they leave one in the trunk with a little bit in the bottom, maybe half a quart.

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Bob Roe
Lehigh Valley PA USA
1973 Olds 88, 1972 MB 280SE, 1978 Datsun 280Z, 1971 Ford T-Bird, 1972 Olds 88, 1983 Nissan Sentra, 1985 Sentra, 1973 230.6, 1990 Acura Integra, 1991 Volvo 940GLE wagon, 1983 300SD, 1984 300SD, 1995 Subaru Legacy L wagon, 2002 Mountaineer, 1991 300TE wagon, 2008 Murano, 2007 R320CDI 4Matic 52K, some Hyundai, 2008 BMW 535xi wagon, all gone... currently
2007 Honda Odyssey Touring, 2014 E350 4matic

i put in 2 of the gallon jugs with a filter change. comes out exactly to the top mark on the dipstick.

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1984 300D Turbo - 231k....totalled 11/30/07 RIP

Well,

Thanks for all the responses. I asked this question because I have read many posts saying that individuals were putting in 2 full gallons. It sounds like the 123's take 7.9 qts while the 124's take 7.4 qts. If that is true, I guess my question is answered.

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1996 (W210) E300D 86K - Traded in for a Lexus
1992 (W124) 300D 2.5 Turbo 202K - Sold
1983 (W123) 300D, 146K - Sold
1970 280S, 263K - Sold - Beginning of addiction

slowmoe

I don't know if its just something with the 240Ds but if I fill to the top mark it seems the oil level drops to the midpoint in no time. It then stays there for a long time. I put in 6 qts at oil change time and don't add till its down to the low mark after sitting over night.I have no idea where the oil above that mid point goes but I use allot less oil since I figured that out.

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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"

If you overfill, the "excess" will burn off in no time from frothing or something like that. There isn't enough difference between 7.9 qt and 8 qt to bother, but a half quart will overfill. This used to cause a number of oil consumption complaints from people who insist on having the oil up to the top mark all the time -- always wait until you hit the lower mark (or the oil level light starts to blink once in a while) before adding a full quart.

On the 603, the oil fill was changed from 8.5 qt to 8.0 quart to eliminate this problem. Oil shouldn't go all the way up to the top mark.

Just be glad you don't have the M117 -- 9.5 qt with oil cooler drain....!

Peter

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1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!

Try 11 quarts...that's what my 6.9l cornbinder diesel needs...at least I can buy the same oil (Delo 15W-40) for both the car and the truck

Before I got the Benz, I had a Ford E-350 with the same 6.9l engine, and was driving to SoCal a couple times a month (my girlfriend lived down there before moving up here with me), and between fuel ($60 to $80 per fueling; got 500 miles to each fill-up) and changing the oil once a month, I wound up dieting whether I wanted to or not...

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2001 VW Jetta TDI, 5 speed, daily driver
1991 Ford F-350, work in progress
1984 Ford F-250 4x4, 6.9l turbo diesel, 5 speed manual
Previous oilburners: 1980 IH Scout, 1984 E-350, 1985 M-B 300D, 1979 M-B 300SD, 1983 M-B 300D
Spark-free since 1999

I used to add 8qts to my 300d with a filter change and it would be right on the max fill mark. It would drop to between the low and max mark in about 150 miles and "mark" her territory when I stopped. So somewhere in this forum someone mentioned adding only 7qts with a filter change which puts the oil at half way between the marks and I only add around a qt. between oil changes. She still lightly marks her territory, I think the D in 300d actually stands for drip, but not near as bad as if I add 8qts.