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Old 12-13-2020, 03:28 PM   #1
Yogrowma
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Member#: 516369
Join Date: Jul 2020
Default Oil Plug Head Rounded

Any tools to remove the 14mm bolt oil plug with rounded hex head? Just 14mm extractor?
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Old 12-13-2020, 06:47 PM   #2
Skeet6
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Member#: 520409
Join Date: Nov 2020
Subaru Stars

Not sure how bad yours is, but on my new (to me) 2016, I went under to find a rounded mess of a 17mm plug. Purchased $5 replacement at NAPA, while getting all ready for all sorts of extraction methods. First, I tapped a good 6 point socket on it, nice and square with a small hammer. It came right off, surprisingly.
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Old 12-13-2020, 07:35 PM   #3
KillerBMotorsport
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Member#: 198281
Join Date: Dec 2008
Chapter/Region: MAIC
Location: Virginia
Vehicle:
2005 WRX/STi
WRB of course

Default

6-point is a good start. Sometimes you can break them free with a chisel on the side of the head. If you know anyone with a welder, wed a nut on.
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Old 12-14-2020, 06:13 PM   #4
Vancouver98STi
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Member#: 459287
Join Date: Dec 2016
Chapter/Region: VIC
Location: Vancouver BC Canada
Vehicle:
1998 JDM Impreza STi
V4 GF8 White

Question

I'm curious how oil drain plugs get "rounded" in the first place? It's not like they're torqued to 300 ft lbs. Is it simply the use of improper tools?
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Old 12-14-2020, 07:09 PM   #5
Aristocrat Autosport
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Join Date: Mar 2014
Chapter/Region: SCIC
Location: Buena Park
Vehicle:
MANY WRX, STI, 997TT
wrb

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usually from using a 12 point wrench and not a 6 point wrench and it slipping, or using a 15mm wrench/socket on the drain plug and not catching it
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Old 12-14-2020, 07:58 PM   #6
Vancouver98STi
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Member#: 459287
Join Date: Dec 2016
Chapter/Region: VIC
Location: Vancouver BC Canada
Vehicle:
1998 JDM Impreza STi
V4 GF8 White

Default

I suspect weekend warriors are using pliers and/or vice-grips!
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