i have a 1994 chevy with 350, used mobile 1 synthetic since new in 1994, 195,000 miles later it purs like a kitten and runs exellent tons of power, my brother has a 1989 chevy with 175,000 miles with a 350, always ran regular- the motor leaks a little and doesn't feel as strong or depenable

1949 Chevy 3600 Flatbed all orginal
1964 gmc 4000
1973 gmc 6000
2005 chevy duramax 4x4
1994 chevy 1500
Trucks are GM and Tractors are Orange

"I don't measure a man's success by how high he climbs but how high he bounces when he hits bottom." - General George S. Patton