[Vwdiesel] '84 Diesel Rabbit Motor Oil 15W-40, 10W-40, 5W-40 . . .

[LBaird119 at aol.com]

  I use the same Cennex Superlube.  Pour point is such that I've 
never used a different oil in winter.  It's also clean burning, higher 
temp to burn or both such that rings don't tend to carbon up from 
coking nor do the bottoms of pistons, V-8 intake manifolds, etc.
In that case it's still possible but less likely that the oil consumption 
is from stuck rings, which is where synthetic would really help with 
oil consumption on a mechanical bent.
  I've also changed valve stem seals by simply using the pistons to 
hold the valves up.  A hammer tap on the valve retainer before 
pushing down to release the keepers will break them loose and 
greatly lower the force needed to compress the spring (no breaking 
loose required.)  :-)
  I change oil every 5K miles due to VW's callout of 7,500 miles 
(which seems too long on a diesel with dino) and the fact that if I 
went for the 4K I otherwise would, I'd loose track and either be 
changing way too often or miss several changes!  With a 5K interval 
I can always keep track even if I don't write it down!  :-)  Changing by 
time seems would be more important if your engine hours don't jibe 
with your road miles such as with a fuel delivery truck or such.  When 
an engine idles a lot either in traffic or on deliveries or sits and runs a 
pump like fuel or cement trucks, the hours go up a LOT compared to 
the miles.  Local fuel delivery truck found out they had to cut their 
change interval to a fourth of the time or less after a few oil analysis 
tests!
     Loren