Took this out of my '04 chevy cavalier. The top cap completely came off the rest of the filter. I didn't even notice until I tried to put the new filter in, the plastic top (on the left in the pictures) was still attache to the filter housing cap. I have no idea how long these two parts were detached. If it had been a canister, I might never have known. Oh well. I had ~3300 miles and over a year on this thing (no name quick lube brand). Thought it was interesting.