Join Date: Jun 2009
Location: Ocean Isle Beach, NC
Vehicle: 2003 SLK320 31,000 miles
Mentioned: 3 Post(s)
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Where is the block drain plug?
In the middle of changing the coolant in my SLK320. Only drained from the radiator drain plug so far and I'm 2 to 3 quarts short of the system capacity. I'm guessing I better find and drain from the block drain plug too. I would prefer not to disturb any of the hoses if I don't have to, but I will disconnect the lower hose if I absolutely have to. Before I do that, can someone tell me exactly where the block drain plug is and what kind of a bolt it is? A photo would be fantastic. I found one reverse or external torx bolt on the passenger side (right) that might be a candidate, but I didn't want to mess with it until I was sure.
2003 SLK320 40,000 miles - now lives in Tucson with my daughter
1959 220S Cabriolet - sold - now lives in Malta
1983 240D 351,000 miles original owner - sold
1999 E300D 215,000 miles
2014 Smart electric 17,000 miles
2014 Smart electric 9,000 miles