RW> Pink is a South Texas special. Because of the very high temps around   
   RW> here,   
   RW> all summer long, it supposedly cools better than orange or green.   
   RW>    
   RW> AFAIK, Yellow is a Ford factory antifreeze...   
      
   Around here, I have only seen the Yellow and Green.  I guess there also a few   
   people that still get the red Dexcool.   
      
   RW> Tell him I have a factory sealed gallon of Dexcool I'll sell him, cheap.   
      
   I'm sure he woudn't be interested.  He told me when he bought the car, the   
   first thing he did was drain out the Dexcool and put the yellow stuff in.  I   
   have seen Dexcool get all gummy in some systems, too.   
      
   RW> Crankcases are pressurized with compressed air/fuel mixture blowing by   
   RW> worn or sloppy piston rings. This is inevitable in internal combustion   
   RW> engines. This is why a PCV 'positive crankcase (vent) valve' was   
   RW> invented.   
   RW> Before PCV came into vogue, there was the 'road draft tube' venting   
   RW> blowby   
   RW> and oil to the underside of you car, the road and atmosphere. Ford's   
   RW> flathead V8s and Y-block V8s were famous - For Oiling Road Dirt - in the   
   RW> day of road draft tubes. All other cars did this too, but none of them   
   RW> lended a name to it better than FORD.   
      
   What about value covers?  My old Malibu used to leak some oil there onto the   
   exhaust manifold.  Not much, but it was enough to make a mess.   
      
   RW> Again, a blowby problem will force oil out of the rear seal.   
      
   I have heard that if a PCV value gets really clogged it can cause that   
   compression to get too high and blow some gaskets.   
      
   - Mark   
      
   --- WWIVToss v.1.50    
    * Origin:  http://www.weather-station.org * Bel Air, MD -USA (1:261/1304.0)