synthetics give better protection at engine startup, better protection at high
temp engine points, and better protection at high load engine speeds.

other than that, 1950's oil technology duz okay.

From: trainfan1
Date: 9/17/2004 9:09 AM Eastern Daylight Time
Message-id:

butch ricker wrote:

Subject: Mobil 1 vs. Valvoline?

Is there really a difference between Motor oils?

Dodge says use 5-30 in the 4.7L DAK; I used castrol in the neon but
switched
to Valvoline when I got the truck

I notice a lot of folks using Mobil 1 (at least in their posts) and was
curious to know why.

J.



Mobil 1 is synthetic, Castrol synthetic (Syn-Tech?) would provide
similar (but by some, debatable) protection. Synthetics provide better
surface protection during long storage periods, better long-interval oil
change protection, & better severe service protection, sometimes more
advanced or different detergent packages, but at a price. If you change
your oil every 3,000 mi. / 3 mos., synthetic would a waste unless you
neede superior cold cranking ability in winter.

We use Mobil 1 in the boats, as the oil is changed only once a year
anyway, in the fall, before storage, after about 50 - 100 hrs. max
usage, and marine engines are so much more expensive (especially
classic/vintage mills). We also use Mobil 1 for our tow vehicle in the
summer, switch back to dino in the fall.

Your actual usage will determine if synthetic is for you.

Rob