1993 GMC Safari Owner's Manual - Page 251
1993 GMC Safari Manual
Page 251 highlights
. c PO344 SAE 5W-30 As showninthischart, SAE 5W-30 isbest for yourvehicle,However, IOW-30 ifit'sgoingto be 0°F (-18°C) orabove. youcanuseSAE Do Thesenumbers onan oilcontainershowitsviscosity,orthickness. notuseotherviscosityoilssuchasSAE 1OW-40.orSAE 2OW-50. 6-1 3
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