UK Car Repair Questions? Ask a Mechanic for Answers ASAP
Mercedes used to say that the gearbox oil was a 'lifetime' oil and never needed changing, however they've since changed their tune and to do a complete oil change you'll need about 10 ltrs and yes there's a special Mercedes dipstick to set the level
there's a couple of drain plugs , 1 for the sump pan and another for the torque convertor
the cooler holds another litre so its not such a big deal if its not replaced but you can use a compressed air gun to blow it through but its not necessery
I'd also remove the sump pan and replace the filter with new
there's an excellent how to here
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