360 - High engine oil copper content | FerrariChat

360 High engine oil copper content

Discussion in '360/430' started by Lola360, Oct 6, 2025 at 4:25 PM.

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  1. Lola360

    Lola360 Karting

    Oct 26, 2023
    153
    Bay Area, CA
    Full Name:
    Connor
    I just got an alarming Blackstone report back showing very elevated copper content in my engine oil. 2 years in a row now actually.

    2025: 231 ppm
    2024: 58 ppm
    Universal avg: 7 ppm

    The most recent one, I want to add, I forgot to sample during the drain. I dunked the sample jar in the ~9L of drained oil that was in my drain pan. (The pan was clean before draining).

    I'm guessing this is rod bearing wear. I'm wondering how much I should be freaking out about this. Should I park the car until the bearings are replaced? Or would it be best to drive it ~500 miles (with a careful eye on the oil P), and send for another report... I switched to Motul 5w40 this time FWIW.

    Any advice is appreciated.

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  2. andrejwolk1975

    andrejwolk1975 Karting

    Feb 28, 2020
    139
    Italy
    Full Name:
    Andrea M
    It is a symptom and not a good one.
    Low end oil pressure is another bad sign: have you experienced this? When the oil pressure lights on is already too late.
    Better safe than sorry. The best scenario? preventive maintenance that will keep the engine happy, cranckshaft related, for a another 2 decades or more,
    The worst? In a long medium range of time a scored, out of spec and trashed crankshaft.
     
  3. voicey

    voicey Formula 3

    Jul 29, 2009
    1,196
    London, UK
    Full Name:
    Aldous Voice
    231ppm is high and a level where I would be advising my client to do something. The first thing is to get another data point - suck some oil from the disareator when hot and engine running. Assuming the high level of copper is confirmed then the first thing I would do would be to remove the cams and inspect the front bearings (part #182694). I have seen quite a few of these wear down to the copper and cause elevated levels in the oil.

    If the copper isn't coming from here then look at the bottom end. The sump comes off really easily with the engine in the car. Most of the main caps can be removed easily with the sump off giving you about half the story here. With the cams out the pistons can be pushed up the cylinder without fear of touching an open valve so you can get all the bid end shells out. A good visual inspection plus measure (estimate) the clearances with PlastiGauge. Note that the rod bolts are one-time use only.
     
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  4. Mario Andretti

    Mario Andretti Formula 3
    Silver Subscribed

    Aug 9, 2020
    1,828
    Boston
    I would just replace all rod bearings if you find some wear, might as well.
     
  5. DiSomma6

    DiSomma6 Formula Junior

    Nov 27, 2023
    279
    Full Name:
    Erik
    I'm curious if you found any shavings or glitter in your oil when you drained it.

    When your first start your car, does the oil pressure light read low for half a second then jump to the middle? Mine did when I was using 15w50, then I switched to 5w40 and it's better now.

    What should the pressure read when hot at idle?
     
  6. KC360 FL

    KC360 FL Formula 3

    Jun 20, 2017
    1,985
    Melbourne Florida
    Full Name:
    KGC
    What is the mileage on the engine?
     
  7. Lola360

    Lola360 Karting

    Oct 26, 2023
    153
    Bay Area, CA
    Full Name:
    Connor
    Have not experienced any issues with oil pressure.

    Thanks for the advice. I'd like to get another data point as well, but the oil is brand new. That would mean, what, couple hundred miles of use on a potential ticking time bomb? Or am I being dramatic?

    I didn't see any shavings or glitter. I stupidly threw away the oil filter and should have taken it apart to look for bits in it. Oh well. When I first start the car, yeah there is a split second before the OP gauge jumps up, generally to the higher end at first on a cold engine. I think this split second response is normal, no?

    74k on the car and engine
     

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