Did you ever find them? Didn't see where anyone told you where the plugs were.

The plugs are under the black strips in the middle on the Cam Covers (also called Valve covers). You no doubt need to remove the Air cleaner assembly to get to them.
After that, the black strips can be pried loose with a small screwdriver under the edge of the black plastic trim which covers the plugs and wires.

The filter is in a canister on the left front side of the engine. It should be silver in color with a 13mm bolt in the center.


There are instructions on this site for changing a 95 E420 if not mistaken. They are real close to yours

http://www.peachparts.com/Wikka/OilFilter1


Mike

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Mike Mullins
03 911 Targa 35K
07 MB C350 Sport (Mileage Sacrifice)
17 Sienna (Grandkids mobile movie Theatre)
17 Toyota Tacoma DBL Cab (YardBoy)
95 E420 (Chariot of Fire) 143K
11 ML350 (Recently Traded)
00 SL500 (Recently Sold)
08 E350 Sport 4Matic (great all round automobile)
90 944/S2 Cabriolet (Loved It)
02 986S (Road Scalpel)
97 E320 Great chassis
92 E420 Red Rider Whip
71 250C Restored MBCA Concours winner and Sold
72 450SEL The Gold Crown - MBCA Concours Winner