10 Apr 11 13:46, Mark Hofmann wrote to Roy Witt:   
      
      
      
    >> They're usually sealed pretty good. You may have another problem   
    >> causing them to blow out.   
      
    >> With that kind of mileage, you're probably experiencing blow-by or a   
    >> plugged up crankcase venting system, causing the intake gasket to   
    >> leak.   
      
    MH> Are you referring to the PCV value?  I have replaced that before, but   
    MH> never the elbow part.  I have had a heck of a time finding the PCV   
    MH> elbow.   
      
   Anything that causes crankcase pressure to build higher than the system is   
   designed for will do what you're experiencing. I've seen pan gaskets leak   
   because of it too.   
      
    >> Front or rear bearings?   
      
    MH> Always the front.  Normally, it is the ABS speed sensor that goes   
    MH> first.  I get the good old ABS idiot light.  I have a tool that can   
    MH> tell me which sensor is bad in the ABS system.  So far, I have not   
    MH> made it more than (2) years with the same front bearing.  That is why   
    MH> I gave up on the cheap China bearings and went with Timkin.  They   
    MH> have a good reputation.   
      
   Interesting.   
      
    >> 3.1 engine?   
      
    MH> It is a V-6 3.4.   
      
   OK.   
      
    >> I ran Dexcool in my 98 Camrao (aluminum block and heads) up until last   
    >> year with no problems what-so-ever. Upon advice from my friend Harry,   
    >> who is the service manager at Benson Chevrolet in San Antonio, I   
    >> switched it to a generic coolant (green).   
      
    MH> Most mechanics recommend ditching the Dexcool.  Makes me wonder why   
    MH> they still make it, unless they changed something in it recently.   
      
   I don't drive the Z very much these days. It has about 92000 miles on it   
   and lives in the garage with a battery tender on it. Except for the   
   occasional drive in the country, she's a garage queen now. And that's with   
   Dexcool in the system, until I changed to the green stuff last year.   
      
   I noticed a puddle under the engine a few months ago and upon   
   investigation, the air compressor has a slow leak, so I get to have the AC   
   recharged about twice a year.   
      
    >> Cleaning up an oily mess isn't much fun either.   
      
    MH> You got that right.   
      
   8^)   
      
                   R\%/itt   
      
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