Change oil soon (& then some)

[Eric Deslauriers]

'93 Suburban 350 TBI, 222,376 miles, uses no more than 1 qt per 3K miles (max
unless towing heavy loads such as 6000# + travel trailers up & down hills, then
2 qts), comes out clean, still running Havoline 10w30. Let's see how long she
goes...

Eric D

Greg Westphal wrote:

> My wife's 2000 Buick Regal has the same oil-life monitoring system you
> GP has.  It's amazing all of the other things packed into these cars'
> computers. :)  Concerning the oil viscosity, today's engines have
> tighter tolerances, so they don't need the thicker oil to maintain an
> acceptable oil pressure.  My '87 IROC (305 TPI until next weekend) has a
> recommended oil of 5W-30, which I've used for the past 60k miles (only
> Mobil 1), and it still has great oil pressure and doesn't leak or burn
> oil with 131k miles on it now. :-)
>
> Greg Westphal
> '87 IROC
>
> Bob Wooten wrote:
> >
> > Thanks to all.  I just changed the oil & when I went to check the manual
> > (yes I am one of those who do read the parts that are important to me), to
> > see how much oil it was going to take there were about 600 warnings to use
> > only 10-30 (or 0-30 for those of you in the colder places) Motor oil & to
> > "NOT USE OTHER GRADES SUCH AS 20-50".  What gives?  am I so out to lunch
> > that I have missed something in motor oil technology?  Mind you this was a
> > 20 year step up for me (had a 78 Turbo Regal), so now you know where I am
> > coming from.
> >
> > Thanks again
> > BW
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