8.1L engine oil drain plug size...

[Richard 34A]

Hello;

I'd like to replace the drain plug, or at least the crush ring or washer, on an upcoming oil change on my 8.1L... anyone know the correct size?

Thank you...

[Richard 34A]

Hello;

I'd like to replace the drain plug, or at least the crush ring or washer, on an upcoming oil change on my 8.1L... anyone know the correct size?

Thank you...

[Mutha]

Richard, unless the OEM plug has stripped treads, you should not have to replace it. The 8.1 uses a M12 X 1.75 drain plug with a machined surface for sealing - No Gasket is required. If you want to use a gasket be sure it a "CRUSH" type gasket. Most of the "CRUSH" type gaskets are copper. You can use a 1/2 inch I.D. gasket on a 12mm Plug. Most parts stores carry them.

Good luck - Glenn

[Richard 34A]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Mutha:
Richard, unless the OEM plug has stripped treads, you should not have to replace it. The 8.1 uses a M12 X 1.75 drain plug with a machined surface for sealing - No Gasket is required. If you want to use a gasket be sure it a "CRUSH" type gasket. Most of the "CRUSH" type gaskets are copper. You can use a 1/2 inch I.D. gasket on a 12mm Plug. Most parts stores carry them.

Good luck - Glenn </div></BLOCKQUOTE>

Thanks for the reply; I guess I don't need the new drain plug but bought one any way for a spare. I did buy some nylon washers; is it okay to use these? Seems like based on the material it would 'crush' a little bit...

[rvten]

I would think if some kind of crush washer was needed. Chevy would have used it as OEM. I never had an oil leak problem with my 8.1 in 7 years at the drain plug.

[Mutha]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Richard 34A:
Thanks for the reply; I guess I don't need the new drain plug but bought one any way for a spare. I did buy some nylon washers; is it okay to use these? Seems like based on the material it would 'crush' a little bit... </div></BLOCKQUOTE>

Richard, I don't know the answer to the nylon gasket question. If you decide to use a nylon gasket, I can't think of any reason it would not work, <span class="ev_code_RED">BUT</span>, I would keep a close eye out for leaks or heat cracking or any oil residue that might appear on any under chassis components.

Good luck - Glenn.

[FrontRangeRVer]

Why not install one of THESE and be done with it?

[JnGOnTheGo]

I put one of the those fomoto on my Brave a couple of years ago and love it. It just takes a little longer drain the pan. But other than that it is easy and I got the model with the nipple so I can attach a hose that drains into gallon jugs.

[Richard 34A]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by FrontRangeRVer:
Why not install one of THESE and be done with it? </div></BLOCKQUOTE>

That looks like a great idea; when draining the oil, the one with a nipple would be nice to attach some tubing and have the oil go right into the container and not have to transfer from a tub.

[alvinc]

Does it require a tool to open the Quick valve? It doesn't look like it.

I would be concerned about kids, or a prankster, opening it. At least with the current plug it takes a wrench and some strength to remove the plug.

Any comments on this? Or am I worrying too much?

[rogueii]

I use one, moved it from my first rv, never had a problem. I had them send me the ring lock, so the drain can't open accidently. You need a pair of pliers to squese the ends together to take it off and on. Easy to do. I also have one on my Honda.
I carry a 2.5 gal gas can and can change the oil anywhere. I let it cool after draining, then change the filter, using papper towels and a plastic bag. No mess.

[Richard 34A]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by alvinc:
Does it require a tool to open the Quick valve? It doesn't look like it.

I would be concerned about kids, or a prankster, opening it. At least with the current plug it takes a wrench and some strength to remove the plug.

Any comments on this? Or am I worrying too much? </div></BLOCKQUOTE>

Well, you're probably worring too much, except that the same thought crossed my mind when I saw the valve. Not likely to happen, but it did have me thinking what that 8.1L might sound like when running with no oil in the pan!

I do like the idea, though, especially the one with the nipple so I could attach tubing to it and drain directly into a container.

I did the oil change a couple of nights ago and all went well; turns out there was no crush washer, so I left well enough alone. I now have unused washers and a spare drain plug for that emergency down the road that probably will never happen... but hey, I'm prepared!