Chevrolet 1994 Blazer Owner's Manual page 246

Just fill it enough to
put the level
somewhere in the
proper operating
range. Push the
dipstick all the way
back in when you're
through.
What Kind of Oil to Use
Beginning midyear 1993, oils of the proper quality for your vehicle will be
identified with this new "starburst" symbol. The "starburst" symbol
indicates that the oil has been certified by the American Petroleum Institute
(API), and
is
preferred for use in your gasoline engine.
You should look for this on the front of the oil container, and use only oils
that display this new symbol.
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