The "run in oil" timing belt will last 60K miles if you are lucky. They designed the most difficult way of replacing it needing specialized tools. It was designed for ease of assembly but not ease of maintenance. Read about the Ford similar bull shit 3 cylinder engine with timing belt in oil disaster. GM is no better ... Like Ford, they care only about quarterly stock price and bonuses.
The "run in oil" timing belt will last 60K miles if you are lucky. They designed the most difficult way of replacing it needing specialized tools. It was designed for ease of assembly but not ease of maintenance. Read about the Ford similar bull shit 3 cylinder engine with timing belt in oil disaster. GM is no better ... Like Ford, they care only about quarterly stock price and bonuses.