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Thread: Few opinions on what to put in cylinders of a 1968 longblock to keep it from seizing

  1. 10-21-2014, 08:26 PM #1
    sandbeige911
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    Few opinions on what to put in cylinders of a 1968 longblock to keep it from seizing

    I am storing a 68' longblock that turns freely and it has duct tape over the top of the cylinders to keep junk out. I also covered it with a towel in the garage. But I have been told everything from WD-40, to regular mineral W30 motor oil. What is the best thing to do? I turn it with a socket wrench every couple months or should I do it more? It turns no problem. I want to pour more fluid in before I re-tape up but just want to make sure I'm doing the right thing. Thanks in advance for any advice.
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  2. 10-22-2014, 04:13 AM #2
    ESully
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    I use fogging oil in my cylinders. Commonly used for boat engine storage in the off season.
    E Sully
    1973.5 911T
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  3. 10-22-2014, 10:03 AM #3
    sandbeige911
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    Never even heard of that, can you pick that up at a Marine supply store I presume? Why is it better than oil or WD-40?
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  4. 10-22-2014, 10:21 AM #4
    Jim Breazeale
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    The old standard is Marvel Mystery Oil. A 50/50 mixture of ATF and kerosene works well, too. Actually the best preservative is a nice dry, clean storage place.

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    Jim
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  5. 10-22-2014, 12:19 PM #5
    304065
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    WD-40 has zero corrosion prevention properties (I have a rusted 2,0 crank to show for that)

    When '065's motor was on the stand for FOUR YEARS (don't get me started) I used Corrosion X http://corrosionx.com/ it is awesome.
    1966 911 #304065 Irischgruen
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  6. 10-22-2014, 01:29 PM #6
    ESully
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    Fogging oil is probably one of the best for cylinders. It clings and will not run off. Available at Marine Supply, or by me Sta-Bil fogging oil is in stock at Autozone.
    Marvel Mystery Oil, or 50/50 mixture of ATF and kerosene would work for freeing stuck rings, but I don't think it would cling to cylinder walls for long term storage
    E Sully
    1973.5 911T
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  7. 10-22-2014, 01:40 PM #7
    Jim Breazeale
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    Quote Originally Posted by 304065 View Post
    WD-40 has zero corrosion prevention properties (I have a rusted 2,0 crank to show for that)

    When '065's motor was on the stand for FOUR YEARS (don't get me started) I used Corrosion X http://corrosionx.com/ it is awesome.

    Everyone should have a can of Corrosion X. That stuff is the BOMB! It says it is the "World's best Lubricant, Penetrant, Anti-seize. That is a fact!
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  8. 10-24-2014, 09:12 AM #8
    ejboyd5
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    Corrosion-X works well in the salt water marine environment - will be perfect for you (good on firearms as well).
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