[Shotimes] What Cause a car to run too lean?

[Donald Mallinson]

No, it was NEVER proved at all that synthetic has any bad 
effects on the cams or anything else.  What is going on is 
that cam lobes have been going bad on cams since the first 
one was made.  It has to do with the quality of the metal it 
was cut from, and the hardening process after that or the 
metal or hardening of the shims or other parts that touch 
the cams.  Oil is almost never the problem, expecially a 
quality synthetic.

Sometimes it happens, and in the very few cars that have had 
bad cams (other than V8's!) if they were using synthetic, 
then either an owner or mechanic jumped to a conclusion that 
they can't support.

When most top manufacturers now put it in at the factory, 
you can even get rid of the old saying that synthetic is too 
slick to let engines break in properly.  Add it to the 
dis-information that synthetics leak more...Not true.

Don Mallinson

Hartberger, Jason M. AT3 wrote:
> Was it proved that synthetic oil caused your cam lobes to go out? seems
> rather like a freak appearance to me... like using plastic windows in future
> liners because the Titanic hit an iceberg (they didn't do that)... not that
> I'm dissing your judgement, just seems weird to me.
> 
> Jason