[VN] New Mobil1 vs. Old Mobil1 vs. Non-Synthetic?

[Shannen Durphey]

2 things synthetic will do well.

1) allow engine to crank over easier in cold temps
2) smoke less in an engine that burns oil
Shannen
93 Cavalier, 178K+, never used synthetic oil.

Michael Adams wrote:
> 
> I hate to be the one to throw water on the synthetic fire, but let's
> remember that synthetic oil cannot work miracles.  I have an '85 Buick Regal
> that has had 20-50 Mobil 1 synthetic in it since about 20,000 miles, up to
> its current 102,000.  The oil and filter were changed every 4000 miles.  The
> engine, frankly, is getting noisy.  In fact, I am a little disappointed in
> how noisy it has gotten considering the expense of Mobil 1.  I am not
> running a fleet, so I cannot attest to the value of using synthetic
> lubricant, but I have had engines with non-synthetic oil which lasted
> better.
> 
> Synthetic, no doubt, is better regarding engine deposits, and thermal
> breakdown.  It's value for reducing wear in on the road conditions (ie. not
> racing), however, is questionable in my mind.  In fact, I have not seen one
> good fleet test with a true A/B comparison, with one set of cars running
> synthetic, and the other running non-synthetic, under the same usage
> conditions.  If someone has seen such a test, I would be interested in
> seeing it.
> 
> Michael Adams
> '89 Coupe 6-speed Z51
> 
> > People are getting 200k+
> > miles out of everything from VW's to 'vettes to Subaru's using regular
> > organic oil simply by keeping to a good service schedule.
> > Synthetic gives
> > you extended drain intervals, a wider operating temperature range, and
> > overall lower internal friction. Going from $1/qt to $3.50/qt
> > to get this
> > is worth it. Going from $3.50/qt to $10/qt for Redline isn't, to me.
> 
> ----------------------------------------------------------------------------
> To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes)
> in the body of a message (not the subject) to majordomo at lists.diy-efi.org
----------------------------------------------------------------------------
To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes)
in the body of a message (not the subject) to majordomo at lists.diy-efi.org