The nut for the transmission dipstick is not closed tightly

2009 FORD EXPEDITION
152,000 MILES • V8 • 2WD • AUTOMATIC
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MEM100
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  • 2 POSTS
Will this cause oil leakage? If air enters the transmission thought the dipstick hole will this be a problem?
Apr 15, 2020 at 9:32 PM
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DANNY L
  • CAR REPAIR CONTRIBUTOR
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Hello, I'm Danny.

Just a quick question first... Are you asking about where the dipstick tube meets the transmission housing ? Let me know and thanks for using 2CarPros.
Apr 15, 2020 at 11:01 PM
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MEM100
  • MEMBER
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Yes. There's a nut which over the dipstick tube and this nut screws into the transmission housing.
Apr 19, 2020 at 5:54 AM
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DANNY L
  • CAR REPAIR CONTRIBUTOR
  • 5,648 POSTS
Hello again.

If the nut doesn't form a complete seal the transmission would be more prone to leaking due to high transmission pressures. So, to answer your question yes, it will leak if not sealed correctly. The fill level/plug will have a rubber o-ring to help seal the transmission and plug/dipstick from leaking. I've attached pictures below.Hope this helps and thanks again for using 2CarPros.

Danny-
Apr 20, 2020 at 3:53 PM