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1984 280SE, 2009 SL550
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497 Posts
Discussion Starter #1
Sorry guys, I searched and couldn't find this. The gassers on W123 are definitely in the minority. What's the oil capacity for the 280? I have the 110.989. I want to do this tomorrow.

Thanks!
David
 

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1979 280CE
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6,118 Posts
you'll need 7 quarts of Castrol GTX 20W-50. I usually add 6-6.5 and check it and add it if needed.
 

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1983 240d - 1985 300d - 1984 280sel
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393 Posts
my manual says 6 liters, but it took close to 7 when i changed it today. (I used 20w50 castrol gtx too!)
 

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1977 230, 1990 300E 2.6
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243 Posts
IMHO, in your area I would use diesel grade 15W40 to protect that fine, hard working Euro. engine. Diesel grade oils were recommended by Mercedes for their gas engines and now contain more anti-wear additives (to better protect older design engines) than found in today's gas engine oils formulated for lower pollution. Valvoline Blue 15W40 advertises more such additives than found in Shell Rotella 15W40.
 

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1984 280SE, 2009 SL550
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497 Posts
Discussion Starter #7
So, I added 6 qts after letting the old oil drain for a LONG while and changing the filter. It ready pretty low, so I added another 1/2 quart, and now it's showing about 1/4" above the full notch. Do I need to let some out? That won't be easy...
 

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1979 280CE
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6,118 Posts
don't worry about. I did the samething, about 1/4" over full. But I have gone 300 miles and the level hasn't dropped any, thats a good thing.
 

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Registered
1984 280SE, 2009 SL550
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497 Posts
Discussion Starter #10
Thanks. Trying to drain just a little out would be a messier job than doing the o/c in the first place. Oil doesn't come out until the drain plug is nearly all the way out...
 
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