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Old 11-15-2005, 06:51 PM
Registered User
Join Date: Feb 2005
Posts: 34
Oil Specs for 300E

I inherited this fine car. And an almost worthless User Manual.
Further, many Chilton and other books also don't address these issues:
(The User Manual says to go to MB shop with wallet open & credit cards out...
and throw yourself on the mercy of the cashier ringing up your billl ;-)
For several changes, at 3K miles the oil was slightly amber; this oil change
at 2,500 miles it was almost black. Maybe I'm doing something wrong, so I ask:

1. I can determine the weight of oil to use, but what grade and spec?
(SF/SG/SH, etc..?)
2. Should I use detergent oil (have 90K miles on odometer.)?
3. Should I use "oil for older engines"?
4. Should I use the "cheapest oil that meets spec"?
5. Is there a preferred brand?
6. Is there a brand to avoid?
7. Should any additives (Like STP or Lucas products) ever be used?
8. Ditto on the above for oil filters (I have been using the L24466)

Thanks for any help, or pointing me to a website or in the right direction.


BnObob (for the fallen flag railroad.)
Artic "Snow" White 1989 300E, 124.030
w/ M103 engine, and 106K orig miles.
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Old 11-15-2005, 08:06 PM
Registered User
Join Date: Feb 2003
Location: Ontario, Canada
Posts: 3,160
Have a look at this:
Don't be so suspicious of M-B dealers.........they don't rape you any more than most other brand dealers.
I actually developed a very good relationship with my dealer.
He always treats me fair, regardless if I go in for parts ( oil, filters, etc. ),or service.
2007 C 230 Sport.
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Old 11-15-2005, 08:19 PM
I told you so!
Join Date: Jun 2002
Location: Motor City, MI
Posts: 2,833
I think BH wants to do it himself.

Here's another link -- MB Factory Approved Service Products
Unfortunately, this publication and its recommendations are not year-specific for MB vehicles.

Use NO additives in the oil.

Oil maintenance is one of the most hotly debated and opinionated topic on this or any automotive forum. You can search using words like "synthetic oil" and read for hours.

If you want a quick and specific answer, I'll give my opinion.

Considering the age of your car, you should do fine with pretty much any oil with a decent grade that matches your climate and driving habits. Stay away from SA-grade oils (I hear they still exist). Use the higher S- grades, such as SH, or SJ. Store shelves are pretty much filled with only these types. Don't use weird grades like 0W-20 for Florida summer turnpike driving or straight 30W for canadian short trip winter driving.

I think all motor oils are detergent. I'm personally not a fan of high-mileage oils.

I would recommend using regular 5W-30 in the winter and 10W-30 in the summer with 3K oil change intervals. Or you can use a good 5W-40 synthetic oil with 6K to 10K oil change intervals. Mobil is a good name for synthetics, others are good as well.
95 E320 Cabriolet, 153K
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Old 11-16-2005, 04:18 AM
1990 300se
Join Date: Oct 2005
Location: Honolulu, Hawaii
Posts: 111
Have you checked your previous posting on this subject?

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