Installing Fumoto oil drain valve, question on gasket and crush washer - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Mr_Eyo · 11-17-2018, 06:09 PM

I'm about to install the drain valve and it comes with a rubber gasket. I got a new crush washer in anticipation for this install, but I am now questioning the order these 2 would be installed. Is it even advisable to use both,. If so, what is the install order (pan>crush washer>rubber gasket>drain valve)?
Thanks.

86MLR · 11-17-2018, 06:44 PM

IIRC, I just used the OEM crush washer.

I'm no expert but using 2 washers doesn't seem like a good idea engineering wise.

bcj · 11-18-2018, 12:11 PM

A "crush washer" does just that.
It would "crush" a secondary rubber washer to useless bits before it did it's primary job.

My FuMoto came with a fiber washer a few years ago.
I used that along with clean surfaces and a slight film of RTV sealant.
I don't anticipate needing to remove it again for the life of the oil pan.

I don't recall exactly how wide the sealing surface is on the valve itself,
but I don't think that it is wide as the original pan bolt.

If the valve was supplied with a washer, use that instead.
Don't torque it to metal bolt / metal washer specs. That would split the rubber.

wolffbite · 11-23-2018, 01:16 PM

I used the included rubber washer.

Do not install both. Crush washer will not "crush" properly with a rubber washer next to it.

When you tighten down the valve, make sure you tighten it with a crescent wrench on the body of the valve and not a socket on the hex end of the valve or you will damage it:http://www.fumotousa.com/installation.php

Enjoy your easy oil changes!

Trueweltall · 12-04-2018, 08:42 AM

I just used the fiber washer that came with it, going on 3 years soon with no leaks.

8RZ · 12-04-2018, 11:15 AM

Quote:

Originally Posted by Trueweltall

I just used the fiber washer that came with it, going on 3 years soon with no leaks.

This.

11-17-2018, 06:09 PM	#1
Mr_Eyo Senior Member Join Date: Jul 2018 Drives: 2017 Toyota 86 Location: CA, USA Posts: 231 Thanks: 21 Thanked 33 Times in 29 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Installing Fumoto oil drain valve, question on gasket and crush washer I'm about to install the drain valve and it comes with a rubber gasket. I got a new crush washer in anticipation for this install, but I am now questioning the order these 2 would be installed. Is it even advisable to use both,. If so, what is the install order (pan>crush washer>rubber gasket>drain valve)? Thanks.

11-17-2018, 06:44 PM	#2
86MLR Senior Member Join Date: Aug 2018 Drives: 2002 VX Commodore SS LS1 Auto Location: Sydney Posts: 2,203 Thanks: 500 Thanked 2,185 Times in 1,111 Posts Mentioned: 13 Post(s) Tagged: 0 Thread(s)	IIRC, I just used the OEM crush washer. I'm no expert but using 2 washers doesn't seem like a good idea engineering wise. __________________ Disclaimer: This post represents the official views of the voices in my head at the time of posting. http://www.ft86club.com/forums/showthread.php?t=133311 I'm only here for the biscuits

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11-23-2018, 01:16 PM	#4
wolffbite Just the tip Join Date: Mar 2017 Drives: 2017 DGM BRZ Location: BC, CANADA Posts: 630 Thanks: 912 Thanked 875 Times in 376 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	I used the included rubber washer. Do not install both. Crush washer will not "crush" properly with a rubber washer next to it. When you tighten down the valve, make sure you tighten it with a crescent wrench on the body of the valve and not a socket on the hex end of the valve or you will damage it:http://www.fumotousa.com/installation.php Enjoy your easy oil changes!

12-04-2018, 08:42 AM	#5
Trueweltall Senior Member Join Date: Feb 2016 Drives: 2016 Subaru BRZ Location: Florida Posts: 394 Thanks: 91 Thanked 195 Times in 115 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	I just used the fiber washer that came with it, going on 3 years soon with no leaks.

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