stan/mike/et al...

I have heard that synthetics do tend to leak more easily... after all
smaller molecules need smaller holes to escape.  That said, having converted
my dino burning low-mileage (38K) WBX to synthetic when I got in almost two
years ago, I experienced no leaks.  However, I did experience a lot of what
I guess they call "blow-by."  My engine USED more oil, again no doubt due to
the smaller molecules.  But I liked the way the synthetic made my engine
run.  My solution was to go to a synthetic/dino blend, whereby getting the
best of both.  Better lubrication, less usage, no leaks.  I change every 5K.
Also, since they sell, and I use, synthetic/dino blends, seems to reason
that you could add dino to synthetic or vice-versa without any problem.  Not
that you would want to contaminate the synthetic unless you had no choice,
but...

Anyway, that's been my experience.  60K now and purring like a kitten (or as
close as a WBX ever comes to sounding anything like a small cat).

mick
89 syncro westy
hilo, hawaii