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Thread: Oil line fittings

  1. #1

    Oil line fittings

    Last week after returning from Willow Springs, the normal 3-4 spot half dollar sized oil spots were accompanied by a large pool located just inside of the passenger rear tire. After inspection, it would appear to be coming from the fittings of the oil lines (currently all factory issue). All three that I could see plus the oil tank drain plug had oil drops.

    Is there anything I could do to better seal these lines? Silicon sealant? Better Earls type fittings? Just plain tighten them more? Does anyone sell steelbraided lines sized for the 911?

    Any help would be greatly appreciated.


  2. #2
    You can try tightening them first (if they're loose). But old factory hoses leak through the material or at the hose/connector joint. Your options are to replace with factory or aftermarket "factory" hoses or try an industrial hose supplier who can replace the hose using your fittings.

  3. #3
    Chuck Miller

    Oil line fittings

    Orme Bros. Hoses in Northridge 818-881-7050

    They only did one of mine, but never leaked since.


  4. #4
    Thank you Chuck, I'll give them a call.


  5. #5
    Reviving old thread……So when assembling oil lines is a specific sealant recommended at connectors ?
    Or just tighten ?
    73.5 Snrf T
    71 Snrf T
    70S targa
    76 914 2.0
    82 Targa,
    85 Alfa GTV6
    60 Lancia Appia Zagato GTE
    Searching for transmission 7115322 (911/01)

  6. #6
    I don't use any sealant. Rarely is the leak past the threads.
    Early S Registry member #90
    R Gruppe member #138
    Fort Worth Tx.

  7. #7
    Senior Member
    Join Date
    Mar 2017
    Orange County, CA & Tucson, AZ
    Brad Davis also does great work rebuilding original oil lines. he is on the Registry and his website is

    Early 911S Registry Member #4087
    Instagram: @myflat6

    '72T hotrod 210 0228
    '82SC Targa
    '97C4S (sold - and regretting it)

  8. #8
    Senior Member
    Join Date
    May 2006
    +1 for Brad Davis. He did the oil lines on my 70E project. He used new period correct fittings supplied by Jimmy Tidwell. No leaks and look perfect
    Tom Butler
    1973 RSR Clone
    1970 911E
    914-6 GT Clone in Progress

  9. #9
    Senior Member Chris Pomares's Avatar
    Join Date
    Aug 2010
    I sent Brad some correct fittings and an extra piece of Elephant Racing's oil lines to match the others to the front cooler. It came back perfect.
    1959 Auratium Green 356A Super w/ Rudge wheels
    1970 Irish Green 914-6 w/2.2S
    Current -1967 Bahama Yellow 912 POLO 2cam4 #1
    Personalized Vintage Porsche's and parts
    I couldn't find the sports car of my dreams, so I built it myself-Ferdinand Porsche

  10. #10
    Hi Guys,

    Thank you for the kind words. Always appreciated!

    When crimping a line I always avoid a lubricant if possible. When assembling an ARGUS or TCH line I prefer to use Aeroquip assembly lube as well as anti seize on the the thread portion where the fitting mates with the aluminum collar.

    Your question may be asking about the nut to engine connection - I do not use any sealant, just a little anti seize on the threads, ball, and shoulders of the nut where is contacts the ball lip.

    Take care,

    Brad Davis
    RGruppe #691
    Early 911S #1547

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