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Old 11-10-2009, 05:21 PM
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Join Date: Jul 2009
Posts: 30
Full Synthetic Oil Question

I just changed the oil in my E320 (gasoline) wagon and have several quarts left over. Now it's time to change the oil in my '95 E300 Diesel and I want to know if I can use this oil or if I have to buy synthetic oil specifically for diesel.
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Old 11-10-2009, 05:26 PM
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Join Date: Feb 2006
Location: Mountains in South Carolina
Posts: 703
My synthetic oil in my 300SD is good for gas engines also. Mine is Rotella T synthetic

1982 300SD
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Old 11-10-2009, 05:27 PM
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Join Date: Jan 2003
Location: Gastonia, NC
Posts: 1,271
Lots of oil info on this forum

you will find more info than you will ever want to know with regard to oil when you search the archives of this forum. Search "synthetic diesel oil" or something similar and watch your screen fill up!
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Old 11-10-2009, 05:27 PM
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Join Date: Oct 2005
Posts: 93
In general the oil needs to be diesel rated, whether synthetic or not.
1984 300D Light Blue/Blue
2006 C280 Silver/Black
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Old 11-10-2009, 05:41 PM
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Join Date: Apr 2007
Location: Valley Center, Kansas
Posts: 119
Here is something I found on my Ford Powerstroke web site. I will say that you will find more to read about oil than you ever wanted to know.

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Old 11-10-2009, 05:54 PM
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Join Date: Oct 2004
Location: Grand Rapids, MI
Posts: 14,861
Only if the oil is a diesel oil (I'm guessing it is not)
-diesel is not just a fuel, its a way of life-
'89 420SEL 168k - mine (OC-170,000)
'93 190D 2.2 - 223k - mine (OC-222,700)
'01 E320 Wagon - 149k - mine (OC-154,000)
'05 C240 4matic Wagon - 153k - wifes (OC-154,500)
'01 E320 - 162k - Dad's (OC-163,500)
'07 E350 Wagon - 116k - dad's (OC-121,500)
'02 E320 - 193k - Brother's (OC - 192,000)
'09 E350 4matic Sedan - 84k - Brothers (OC-85,500)
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Old 11-10-2009, 06:04 PM
Join Date: May 2002
Location: Blue Point, NY
Posts: 25,396
Look on the side of the container for the API ratings.

Gassers will have ratings that begin with "S".

Diesels will have ratings that begin with "C". The most recent rating is "CJ", although the older "CI" will probably be fine.
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Old 11-11-2009, 08:55 AM
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Join Date: Jan 2006
Location: Northeast Indiana
Posts: 10,767
You want the newest "CJ" rating, the new formulations have less of the additives to deal with sulfur to match the new fuels, also CAT safe.

Gone to the dark side

- Jeff
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