re: oil change intervals

["Grant Lenahan" <glenahan@notes.cc.bellcore.com>]

>>but haven't they improved engineering (not 
>>related to that damned engineer thread, mind you) enough to the point where 
>>they don't HAVE to change the oil every 3000 or so miles?

True, you don;t have to.  I use the rule of thumb that you should cut
the manufacturer's recommendation by 1/2.  I don;t have time
to go into all the rationale, but It's not religion.  OTOH, I have no
data to prove that this extra $40/yr makes a difference, but it 
doesn't hurt.

Grant