Date registered: Mar 2006
Vehicle: 2010 C200cgi W203/SLK230/C180/230E/280SE
Location: Sydney Australia
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DIY Oil Change
Mobil 1 0W-40 is the oil recommended by Benz - The 0W spec is important in minus temps -- Altho' synthetic has a reputation for finding leaks, it shouldn't be a problem and the sooner you change to synthetic the better -- frequent changes are the cheapest insurance you'll ever get -- If your car has been stretched to 15k oil changes on ordinary oil you could consider a flush additive to your old oil 10 mins before you drain it - will dissolve some deposits/varnish and get them out of there. Mobil 1 has enough cleaning action to keep your engine clean from then on.
Then consider changes every 5-10k max - with filters cheap and a suction pump, you could do it in 15 min.
Special tool is a 76/14 socket (76mm - 14 flats) Other members have bought a Walmart univ wrench $5 or Pep boys/Autozone.
Buy quality filters Hengst etc - very cheap (fleece filters are the best - don't know if you can get them for your model) - they come with a new O ring.
On earlier models, the filter remains in the housing and is lifted out by the handle provided.
Don't overtighten -25Nm or 18ft/lbs is specified.
The extractor is not only easy but it removes slightly more old oil than dropping the plug - Benzs are designed for suction removal. If you have yet to buy the extractor, search the R170 site for "Fluid extractor, my new best friend" - good tips on diff. models.
(NOTE - if you do remove the sump plug, it is important to use a six sided socket - the plug is intentionally made of soft metal and an ordinary socket/ring spanner will strip the facets)
Hope this helps
Last edited by oberoi; 09-05-2006 at 10:06 PM.