23 Apr 12 20:38, Mark Hofmann wrote to Roy Witt:   
      
      
      
    RW>> My thinking is that if the oil used is heavier, it will be less   
    RW>> likely for the lifter to leak down. You could also go with a single   
    RW>> weight oil such as 30w and get the same effect.   
      
    MH> I'll try the 10w-40 synthetic on my next change.   
      
    MH> Would 20w-50 be too thick and cause a possible gasket blowout?   
      
   It will be just fine. Gaskets don't fail because of heavy oil, they fail   
   because of internal gas* pressure.   
      
   * Not gasoline, gas as in piston ring blowby creating pressure in the   
   crankcase, which is vented through the PCV.   
      
    MH> I used that type of oil in the old Malibu and my daughter's car to   
    MH> "slow down" the oil leaking.  The thicker it was, the less oil would   
    MH> leak out.   
      
   LOL! Oooook...   
      
      
                   R\%/itt   
      
      
     ... Only those who will risk going too far can possibly   
     ... find out how far one can go ~ TS Eliot   
      
      
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