ok i have an 03 cavi with the ecotec and my oil is disappearing but no leaks and im getting water and sludge on the dipstick i had compression test ran and compression checks out no smoke since the weather has warmed up coolant level has not dropped performance wise i have major hesitation if I try to acclerate quickly sometimes I really need to figure out whats going on i changed the oil and flushed the motor and cooling system and less than 1000 miles later same problem is back any input is appreciated
