Vehicles equipped with the 4.6L engine may develop excessive oil consumption. Please be advised that under optimum driving conditions, using one quart of oil every 2000 miles is acceptable. This Cadillac standard applies to vehicles with less that 50,000 miles. Our technicians tell us that if you experience excessive oil consumption it may be caused by built up on the piston rings which restricts movement, preventing them from wiping all the oil from the cylinder walls. Oil left behind is then burned during the combustion process. There is a special ring cleaning procedure which can help this situation. The GM service bulletin number is #02-06-01-009C.
Car Problem Reports
Cadillac Seville SLS Excessive Engine Oil Consumption
Cadillac Seville SLS Problem
Average Mileage: 93,000 mi (90,000 mi - 96,000 mi)
Visitor, 2003 Cadillac Seville SLS, 96,000 mi
Started using lots of oil around 82K. Switched to 10w 30 REGULAR oil, and it has helped some. Didn't know about a cleaning procedure. Is it expensive?
Visitor, 2000 Cadillac Seville SLS, 90,000 mi
using 2 qts wk about 300 mls, low oil pressure light stays on cant be cleared