Here are some pics from under the valve cover of my '95 Accord EX 4 cylinder. There's a bit of a layer of varnish over most everything. Above is the very front of the cylinder head, just above the exhaust guard. There's some gritty sludge built up around the front here. In the picture above, you can see a little sludge on the bolts that hold the rocker arm assembly in place, but there is nothing but varnish on all the moving parts. Above, notice how much cleaner the back of the engine (right side of the picture) is than the front. The pic above and below are of the back of the cylinder head. The engine is slanted back toward the driver, so the most of the oil should flow down to this side of the engine. Back here there is no varnish, just a golden, motor oil color. This car has 159,254 miles on it, I bought it at 90,8xx. I've run 5k or less OCIs on it since then, with either HDEO or Mobil 1 (10W-30 and 5W-40). This car has already had 3 ARX treatments with Chevron Supreme. I followed the instructions to the letter. These pics can be compared to this car, which has the non-VTEC version of this engine, as opposed to my VTEC.