Nissan 370Z Forum - View Single Post - Oil Drain Plug Crush Washer-Stupid Question

rmorrow · 07-09-2010, 07:13 PM

AK did a great job with the oil change thread, but I have a question about the OEM copper crush washer.
One side of the washer has a greater amount of surface area, and a very small indention/cut-out in the ID of the washer. The other side has a smaller amount of surface area. In AK's DIY Oil Change Thread (Step 6) there is an enlarged view of the washer. Does the side of the washer closest to me in the picture (the side with the small cut-out in the ID) go against the oil pan, or against the head of the drain plug? I used to change my oil all the time, many years ago. This was when the washer was a reusable washer. A disposable washer is new to me.
Stupid question, but I damn sure do not want to put the washer on incorrectly.
I am blind as a bat anyway, so both sides look flat to me...

07-09-2010, 07:13 PM	#1 (permalink)
rmorrow Base Member Join Date: Jun 2010 Location: Houston Posts: 79 Drives: 2010 370z Sports MT Rep Power: 15	Oil Drain Plug Crush Washer-Stupid Question AK did a great job with the oil change thread, but I have a question about the OEM copper crush washer. One side of the washer has a greater amount of surface area, and a very small indention/cut-out in the ID of the washer. The other side has a smaller amount of surface area. In AK's DIY Oil Change Thread (Step 6) there is an enlarged view of the washer. Does the side of the washer closest to me in the picture (the side with the small cut-out in the ID) go against the oil pan, or against the head of the drain plug? I used to change my oil all the time, many years ago. This was when the washer was a reusable washer. A disposable washer is new to me. Stupid question, but I damn sure do not want to put the washer on incorrectly. I am blind as a bat anyway, so both sides look flat to me...