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99 SLK230 SPORT
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Discussion Starter #1
I searched and waht not but most of you are recommending 0W-40 or 15W-50


whhat weight oil is recommended for the car? 99 SLK230

I was looking at the Mobil 1's Extended Performance oil that goes for 15,000miles. i'll be safe and change that at every 10,000miles and with OEM filter. but i believe it only comes in 5w-30 weight

so whats the dealy?
 

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'01 SLK230,'93 190E 2.3, 1971 LS5 Corvette Convertible
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I use Mobil 1 SuperSyn European Car Formula 0W-40 and change the oil and filter every 5,000 miles.

Dave

Just FYI since this topic comes up often...

Here is the list of motor oils from the Factory Approved Service Products leaflet from MBUSA. This list is dated September 2003 and is the latest version as of April 2004. This is the complete List

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Approved Motor Oils for all Mercedes-Benz models with FSS (1998 and newer)

MB Spec Brand Viscosity
------- ------------------------------------------- ---------
229.5 Mobil 1 SuperSyn European Car Formula 0W-40
229.5 Pennzoil European Forumula Ultra 5W-30
229.5 Quaker State European Formula Ultra 5W-30

229.3 Mobil 1 SuperSyn European Car Formula 0W-40
229.3 Castrol Syntec 5W-40
229.3 Quaker State Full Synthetic European Formula 5W-40
229.3 Pennzoil Synthetic European Formula 5W-40
229.3 76 Pure Synthetic Motor Oil 5W-40
229.3 Kendall GT-1 Full Synthetic Motor Oil 5W-40
229.3 Motul 8100 E-Tech 0W-40
229.3 Motul 8100 X-Cess 5W-40
229.3 Shell Helix Ultra 5W-30
229.3 Shell Helix Ultra 5W-40
229.3 Valvoline SynPower MXL 0W-30

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Viscosity Grades

Select viscosity according to the lowest temperature expected before the next oil change

All temperature ranges: 0W-30, 0W-40, 5W-30, 5W-40, 5W-50
-4F (-20C) and higher: 10W-30, 10W-40, 10W-50, 10W-60
+5F (-15C) and higher: 15W-40, 15W-50
+23F(-5C) and higher: 20W-40, 20W-50
 

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SLK in brilli silver
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I use mobil's syn 0-40wt. It what came in the car so I prefer to stick w/it. I change it out around 7500 before the fss tell me to do so.
 

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190E 2.3 & SLK230K
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SLK230K's require 6.1 quarts of oil, yes?
 

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SLK32, ML430
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Stay away from Castrol Syntec. I used it in a previous car and believe it is to blame for early engine troubles. It is not a true synthetic oil and is one of the few oils that failed a major auto manufacturers testing process.

The German Castrol is supposed to be good but I am not sure where you can get it.

Personally in the North America I recommend sticking with Mobile 1.
 

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99 SLK230 SPORT
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Discussion Starter #6
i just got 6 quarts of Mobil 1 Extended performance 15w-50 oil.... it seems to have a blow by so hopefully the thick oil will help it out.
 

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SLK230
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Mobil 1 0-40

I've used Penzoil 15w-40, Mobil 1 15w-50 and then transitioned to MB1 0w-40. Overall, I've received the best MPG with 0w-40 - about 28mpg instead of 24 with 15w-50. A mechanic in my area told me that 15w-40 is a "fleet oil grade" - companies/governement operating cars, light trucks and heavy diesels would select one grade, even dealerships with a range of vehicles such as MBZ will opt for 15w-40 as it covers all temperature environments in North America. Standard Oil Delo and Shell Rotella would be good examples of fleet oils. He said that 99% of SLK drivers didn't need the 15w-50 unless they were racing their SLK's in the desert.
BTW - an autoparts store called "Kr_____" MB1 sale @ $3.99qt. through 5/30/05
 

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Discussion Starter #9
yeah but thye don't have 0W-40 in the Extended performance oil..only 5W-30, 10W-30 and 15W-50

0W-40 seems like it's too THIN isn't it?

well enlighten me on the benzes...im knew I've always used 5W-30 summer and 10W-30 in the winter
 

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SLKRoadster99 - 5/5/2005 1:04 AM

yeah but thye don't have 0W-40 in the Extended performance oil..only 5W-30, 10W-30 and 15W-50

0W-40 seems like it's too THIN isn't it?

well enlighten me on the benzes...im knew I've always used 5W-30 summer and 10W-30 in the winter
Too thin? Not sure why you would have this impression. It has a veyr large operating range. It will start flowing at low tempretures and maintain its protection into hot weather.
 

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1999 SLK230 Kompressor
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Using 5W 30 will not destroy your engine. MB recommends certain types of oil for your car and 5W 30 is one of those grades eventhough the only Mobil on that list is 0W 40 - but common automotive sense (if there is such a thing) tells me that using 5W 30 will work just as well as 0W 40. They are not that different when you get down to it, only a few differences in temp range and viscosity. Get the oil that will work best for the climate you are in ... end of story.
 

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190E 2.3 & SLK230K
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ok stupid question...

is all Mobil 0W40 oil the same? the reason I ask is because someone mentioned that MBZ recommends Mobil 0W40 "European Forumla"...is that the same as the standard Mobil 0W40 sold at Kragen Auto Supply for $4.99? [:p]
 
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