What kind of oil plug is this? (LAC)

[Kneale Brownson]

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Fumoto?   http://www.fumotovalve.com/


At 09:39 PM 02/25/2002 -0800, Tony Lum wrote:

>Hi gang,
>
>When I first got my 5kcstq, it came with a special kind of oil drain
>plug.  I can't figure it so I'm asking for the list's advice.  Its a normal
>hex shape stamped "ARC INC" with "PATENTED" underneath (no number
>though).  Past the 14Mx1.50 thread there are 3 small holes with a spring
>visible inside.  The end has a captive brass end that look likes a temp
>sensor.  The top of the bolt head has a flat neoprene cap that you can lift
>up but won't come out (at least as far as I've pulled).  Appreciate any
>knowledge of what this gizmo is.  Right now I replaced it with a stock oil
>drain bolt.
>
>Regards,
>-Tony
>1987 5kcstq, 1.8 bar
>
>
>
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