I always oil 'em up real good myself. I bought one for the 99CLK in April, but it looked dry around the edges like buttered toast at a truck stop diner. I sprayed it to bring it up to my standards, but now I'm a little worried.
I did a net search on cleaning the MAF in other cars, but after removing the difficult security screws holding it in, it isn’t at all what I expected. There looks to be a exposed zener diode on it, and a flat strip of exposed metal. Anyone know what the story is there??
The MAF, intake tube, plastic grid and screen are all oil and dust free so I’m just going to leave the K&N in there for now. Judging from its looks I would think you could soak it in oil.