From: clare@snyder.on.ca   
      
   On Wed, 1 Oct 2025 16:06:08 -0700, Bob La Londe    
   wrote:   
      
   >On 9/30/2025 10:51 AM, Bob La Londe wrote:   
   >> Good Soak For Rings In an Engine That's Been Sitting A Long Time???   
   >>   
   >> When I was a kid everybody said to dump a table spoon of Marvel Mystery   
   >> Oil down each spark plug hole amd let it set for a few days to reduce   
   >> the risk of cracking a ring when you start trying to move the engine.   
   >>   
   >>  From what I've heard and read they changed the formula of the snake oil   
   >> and is not so good anymore. I don't know.   
   >>   
   >> Yesterday I heard a new one. Dump a mix of ATF and acetone in, and put   
   >> the spark plug back so the acetone will force the ATF through the rings   
   >> with pressure as it turns to vapor. I've never heard that one before. I   
   >> have some reservations.   
   >>   
   >> I've got a 42 GPW (that was my dads) Jeep with a newer M38 Jeep engine   
   >> that eventually I'd like to sell. Its been parked for 40 years so there   
   >> will certainly be some tendency for the rings to stick. I'd prefer to   
   >> sell as is and let somebody more expert than me deal with it, but I see   
   >> no reason not to do little things to help that happen as time permits.   
   >> Eventually being able to get compression on all cylinders might help...   
   >> unless its bad of course.   
   >>   
   >> Anyway I'd like to hear what you guys know or have heard about soaking   
   >> the rings in a sitting engine before trying to turn it over.   
   >>   
   >>   
   >>   
   >   
   >Acetone and ATF were by and large the biggest agent suggested with   
   >Marvel Mystery Oil being a close second.  This doesn't mean Mystery Oil   
   >is still good.  Nearly all of those who said they used it admitted they   
   >have an old can that may not be the same as the new stuff.   
   >   
   >Looks like acetone and ATF are the new shade tree mechanic approved   
   >concoction.  I have Acetone and ATF on the shelf.  I don't have any   
   >Marvel Mystery Oil.   
   >   
   >   
   >   
   >   
   >   
   >--   
   >Bob La Londe   
   >CNC Molds N Stuff   
    I still use MMO and have current stock - seams to be the same as what   
   I used 40 and 50 years ago.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)