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> Question for 914/6 oil tank/oil change, Does it need a supplemental way to drain?
930cabman
post Jul 10 2024, 01:02 PM
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QUOTE(Krieger @ Jul 9 2024, 07:38 PM) *

This is the solution I came up with. I ordered the factory oil lines from the the tank to the cooler. It came with a union. I had a face machined then drilled and tapped it for a drain plug. I drilled the plug so I could safety wire it.




Thanks for chiming it, especially after several years ago. This is great information
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porschetub
post Jul 10 2024, 04:12 PM
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QUOTE(Krieger @ Jul 10 2024, 01:43 PM) *

I am very happy I did this. It drains very quicky and isn't messy like disconnecting fittings. I use an aluminum washer from the valve cover as a sealing ring.



Exactly what I did ,used a NPT (?) 1/8" plug as mentioned works well ,I found I got more oil out once it was warm and drained quicky after stopping engine ,seemed I had less to drain from the engine that way ,cheers.
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930cabman
post Jul 28 2024, 07:26 AM
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Curious:

just how much oil is left in the system if only the sump is drained? Cannot be much as it appears to be the low point in the system TIA
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mb911
post Jul 28 2024, 08:46 AM
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QUOTE(930cabman @ Jul 28 2024, 05:26 AM) *

Curious:

just how much oil is left in the system if only the sump is drained? Cannot be much as it appears to be the low point in the system TIA

Depends on wearing past the oil pump. I drain both areas to ensure a full or as full of change as I can do. I then measure that amount and put that back in as a starting point on a fresh change. Then warm the car up and check level and add as needed
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930cabman
post Jul 28 2024, 09:13 AM
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QUOTE(mb911 @ Jul 28 2024, 08:46 AM) *

QUOTE(930cabman @ Jul 28 2024, 05:26 AM) *

Curious:

just how much oil is left in the system if only the sump is drained? Cannot be much as it appears to be the low point in the system TIA

Depends on wearing past the oil pump. I drain both areas to ensure a full or as full of change as I can do. I then measure that amount and put that back in as a starting point on a fresh change. Then warm the car up and check level and add as needed


Thank you, I just dumped about what I filled with, about 10 qt which might be a bit much. Will fill with 9 qt next time.

Not sure how much is left in there (IMG:style_emoticons/default/screwy.gif)
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ClayPerrine
post Jul 28 2024, 10:07 AM
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QUOTE(brant @ Jul 9 2024, 09:17 PM) *

QUOTE(Krieger @ Jul 9 2024, 07:43 PM) *

I am very happy I did this. It drains very quicky and isn't messy like disconnecting fittings. I use an aluminum washer from the valve cover as a sealing ring.





That’s nice
-12 or -16? Scratch that ….. pipe thread what size?
Where did you find it?

I’ve been splitting aluminum AN fittings in my line since 2005 without issues
Probably over 150 oil changes/events


That is a Porsche factory fitting... AKA a Cohline fitting. Drilling it for a drain plug is the modification.
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gereed75
post Jul 28 2024, 10:51 AM
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QUOTE(ClayPerrine @ Jul 28 2024, 12:07 PM) *

QUOTE(brant @ Jul 9 2024, 09:17 PM) *

QUOTE(Krieger @ Jul 9 2024, 07:43 PM) *

I am very happy I did this. It drains very quicky and isn't messy like disconnecting fittings. I use an aluminum washer from the valve cover as a sealing ring.





That’s nice
-12 or -16? Scratch that ….. pipe thread what size?
Where did you find it?

I’ve been splitting aluminum AN fittings in my line since 2005 without issues
Probably over 150 oil changes/events


That is a Porsche factory fitting... AKA a Cohline fitting. Drilling it for a drain plug is the modification.




thats what i have. aluminum washer and safety wire ez peazy
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930cabman
post Jul 29 2024, 06:30 AM
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After draining the oil from the sump (and getting 10 qts) and later opening up the line to the oil cooler, I collected less than 1/2 quart.

Is it worth it to insert a "T" fitting for less than 1/2 qt?

My gut says no, leave well enough alone
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