The Cadillac Northstar with a 4.9 Litre V8 engine was introduced in 1991. This tools has a solution that soaks the rings for two hours and is then vacuumed out through the spark plug holes.
Oil Leak Problems
Oil leakage problems have been reported with the 1996-99 model years. In response, Cadillac designed a new rear main oil seal which has solved the problem.
There have been corrosion problems associated with leaving this coolant in the engine for such an lingering length of clock, principally when it is mixed with criterion green-colored coolant.
Oil Burning Issues
Due to the 10,000-mile amplitude between oil changes that is recommended by the manufacturer for the Cadillac Northstar, oil burning is a commonly reported crunch. When this occurs, Cadillac recommends using a GM cleaning equipment To cleanse the valve rings. On account of its introduction, the Northstar has been the top of the borderline GM luxury automobile engine. Nevertheless, there have been some characteristic problems with this engine.
