Dmax
Well-Known Member
- Joined
- Dec 26, 2019
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- Denver, CO
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- 2019 Ford Ranger Lariat 4x4
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The aluminum washer has an OD of .870 in, ID .484 in and thickness .077 in.
The photo shows the aluminum washer on the adapter with the Fumoto washer nesting on top to illustrate how the aluminum washer would overlay the counterbore. The counterbore depression on the Fumoto washer is @ .630 in so this should be close in dimension to the counterbore in the oil pan.. This washer should work very well. I also have a copper washer with same OD and ID but thickness of 0.48 inch. It should also work very well.
In summary, for installation of the ADP-107 adapter, I would not use the supplied Fumoto washer gasket. An aluminum or copper crush washer appears to be a better solution. The Fumoto washer gasket is fine to use between the adapter and valve body.
Since I just changed my oil and re-installed the OEM plug, I can't validate this installation till the next oil change in about 5000 miles.
Cheers and happy motoring...
Thanks for the info and updates. Going to ask fumoto to send me a better washer at this point. Looks like it won’t hold up over time.
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