Daytona Oil Leak | FerrariChat

Daytona Oil Leak

Discussion in 'Vintage (thru 365 GTC4)' started by Dino6304, Apr 21, 2023.

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  1. Dino6304

    Dino6304 Formula Junior

    Jul 27, 2020
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    Laurence
    Beginning to sort out my recently purchased Daytona.
    Due to CT weather I haven’t actually driven it yet but have started it a few times. After running it for 30 minutes or so I noticed a small amount of engine oil under the car (see pic). I wiped it up but left a rag in the area of the leak. It only seems to leak when it is started.
    Any ideas
    Thanks
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  2. westextifosi

    westextifosi Formula Junior
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    That might be a loose fitting at the oil reservoir.
     
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  3. Dino6304

    Dino6304 Formula Junior

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    That was my thought as well
    Do you access this from below or in the engine bay
     
  4. turbo-joe

    turbo-joe F1 Veteran

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    so you mean when you start the engine or when the engine is running?
     
  5. Dino6304

    Dino6304 Formula Junior

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    Apparently when it is running
    What would be the difference
     
  6. Rifledriver

    Rifledriver Three Time F1 World Champ

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    Scavenge hose, also called return hose is higher than the static oil level and only has oil when running. Oil supply hose on the other hand is below the oil level. It is actually under a vacuum when running and often will not leak when running and will leak when not. I have seen supply hoses with a very loose fitting not leak when its running.
     
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  7. TTR

    TTR F1 Veteran
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    #7 TTR, Apr 21, 2023
    Last edited: Apr 21, 2023
    Romano, oil leak/seepage in a LH drive Daytona is most likely coming from the oil reservoir/tank drain plug or the fittings of the lower oil hose, which feeds oil to engine. Either can leak/seep whether the engine is running or not.

    Laurence, both of the aforementioned are best to access from underneath the car, drain plug tightening quite easily if you just lay on the ground and look under the fender apron.
    The tightening of the hose fittings will require large wrenches (M32 & M36, IIRC) and might be best to do on a 2-post lift or the car elevated off the ground, like on jack stands.
    Addressing either may require draining the oil from the reservoir/tank.

    OTOH, if the leak/seepage is minor, it shouldn’t prevent you driving/enjoying the car.
     
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  8. Dino6304

    Dino6304 Formula Junior

    Jul 27, 2020
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    Very helpful
    Only leaks if I run the engine
    Once wiped up there is no additional leakage
    Will put it on a lift in two weeks when we put the refinished alloys on the car
    I suspect it is the upper hose
    Hopefully just tightening
    Thanks
    Wonderful forum!!
     
  9. Dino6304

    Dino6304 Formula Junior

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    How much oil does the Daytona need for an oil change
     
  10. turbo-joe

    turbo-joe F1 Veteran

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    thank you timo
    I only asked if the oil is dropping during starting or when the engine is running. I once had a mercedes that only was dropping a little oil when starting, so using the starter. as soon as the engine was running there was no leak anymore. problem was an oil hose what was leaking only when cold and with a little oil pressure, as soon as there have been more pressure it was dense. this took me some time to find out
     
  11. Rifledriver

    Rifledriver Three Time F1 World Champ

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    The scavenge hose fitting is much easier to get to from the top.
     
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  12. Dino6304

    Dino6304 Formula Junior

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    Is it easy to take the sheet metal out that covers the oil tank
     
  13. swift53

    swift53 F1 Veteran
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    18 quarts + /- .
     
  14. Dino6304

    Dino6304 Formula Junior

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    Thanks
    I was told by a very experienced Ferrari mechanic that about 14 qts is what you should use
     
  15. Edward 96GTS

    Edward 96GTS F1 World Champ
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    a large metal braided hose kinda “traps” the shield as the hose runs through it.
     
  16. Edward 96GTS

    Edward 96GTS F1 World Champ
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    what oil will you be using? im tempted to try Joe Gibbs Driven oil. 15-50.
     
  17. DWR46

    DWR46 Formula 3
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    13-14 quarts is PLENTY of oil for a Daytona. With the oil cooler in the bottom of the radiator, your biggest problem is too cool an oil temp. More oil just makes things worse.
     
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  18. DWR46

    DWR46 Formula 3
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    Everybody has opinions about oil choices. For the Daytona (and other Ferraris of this and earlier eras) I would suggest staying with a conventional (dinosaur) oil in 20/50 wt with zinc additives. Both Valvoline VR1 and Castrol GTX Classic meet these criteria. Synthetics are great for modern cars, but I guarantee you WILL have oil leaks with a synthetic in an older Ferrari as they were not designed to use and seal with these oils. Just one person's opinion. I am sure many others will also have opinions.
     
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  19. Edward 96GTS

    Edward 96GTS F1 World Champ
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    any thoughts on Swepco oil?
     
  20. TTR

    TTR F1 Veteran
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    I agree.
    My choice for all (hundreds of) 50+ year old vintage cars, both clients and my own, I've driven/serviced/used in past 40+ years has been conventional/"dinosaur" 20W-50, which in past 15-20 years has mainly been "Racing" VR1.
    While there might be other "opinions", so far with combined +/-500K driven miles between all of them, I haven't experienced any need to consider changing to something else.
     
  21. swift53

    swift53 F1 Veteran
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    Swepco is the best idea since sliced bread :)
     
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  22. Rifledriver

    Rifledriver Three Time F1 World Champ

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    Motor oil is no better or worse than Valvoline Racing Dwight mentioned but the gear oil is garbage.

    Id just save the money and trouble and get Valvoline. It pretty cheap at Walmart.
     
  23. Edward 96GTS

    Edward 96GTS F1 World Champ
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    swepco gear oil is garbage? im using mobile 1 gear oil.
     
  24. Rifledriver

    Rifledriver Three Time F1 World Champ

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    Good.
     
  25. swift53

    swift53 F1 Veteran
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    Brian wrote the Bible on Swepco. :)

    I mean, how can you make such a broad statement. 80 years of experience clearly.

    Regards, Alberto
     
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