Oil Grade ?

["James L. McGill" <fishbowl@fotd.netcomi.com>]

Okay, I have gotten conflicting advice and now I need
to be straigtened out.

What Oil should I use?  

One person says "Use only SAE 30"

Another says "Use 20-50.  30 breaks down too fast"   


Based on the first advice, I've been using 
30 weight oil the whole time.  

What do I need to know about oil before taking a
loaded van on a 3000 mile trip?

Is there something else I should know about oil
for a daily driver type3 in Texas in the summertime?

Thanks!

--
g-r-a-t-e-f-u-l-l-y---[   email:<fishbowl@conservatory.com>   ]---l-i-v-i-n-g
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Here I am in 53 B.C. and all I want is a dill pickle!!