first vehicle was a 96 gmc sonoma with a 4.3 v6,
had 90000 miles on it when i got it when i first got my license (which was in 2004) my dad changed the oil in it when he brought it home for me and i didnt pay attention to what oil he used but after i drove it for awhile i developed a led foot and drove like a typical teenage idiot lol but anyway i remember going to wal-mart with my best friend looking at oil to buy because we were both changing our oil for the first time. looking at different oils and reading the back of the bottles, i picked up castrol gtx and the first thing i read on the back was "Rapid Acceleration, Sudden Stops, and High Revving" i immediatly said to my friend, this sounds exactly like us i think this is our oil, and thats what we bought in 10w30 with ac delco filters for our trucks. and thats all i used for the rest of the time i had that truck, had 143000 on it when i sold it