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very way to get you to the dealers. - barney100
I took my W merc 220 diesel for an oil change at a local fast fit place in Town to be told there is no way they can get the oil filter off. Apparently you need a special tool that adjusts to some sort of torque...sure that is a torgue wrench! Anyway I had to go clutching credit cards etc to the the dealers and was relieved of £100 odd pounds...plus Vat..''needs special synthetic oil sir''....What are other manufacturers coming up with to get you in their dealerships?
very way to get you to the dealers. - mrmender
An independent garage is certain to have the correct tool, to do the job. I'd like to know what exactly they were short of
very way to get you to the dealers. - kennybase
Elbow grease probably - just helps to ease the filter off!
very way to get you to the dealers. - Vansboy
This 'Special Tool' requires a substantial investment of, around £3 if memory is working correctly!!

VB
very way to get you to the dealers. - Bill Payer
You really need a deep, 6 sided, 27mm socket to get the oil filter housing off, and it's supposed to be torque'd back on.

It seems quite a lot of fast-fit places won't do Merc's, but others will, so I guess it's just a matter of asking. I guess you should be specific when 'phoning - many of these places say 'yes' to everything on the 'phone, then it all changes when you get there.
very way to get you to the dealers. - Bill Payer
Sorry - not deep, shallow! Like this:
www.autopart.com/TOOLS/TOOLSMAIN/tool/T_2570.htm
(check your filter housing to see if that's correct - there are a few types used). I believe you can buy the tool in Halfords.
very way to get you to the dealers. - Leon_vas
The Merc oil filter housing nut is prone to shearing - hence most fast fit places decline to service Mercs. If you are DIY person, it is relatively simple to change the oil & filter (good advice available on MB forums). Only nuisance is draining the oil traditional way, but suck out pumps are available via tool suppliers.