Here's why:
* Engine type: The 960 wagon was equipped with the B6304 straight-six engine, a variant of the Redblock engine family.
* Valve design: The B6304 engine utilizes overhead camshafts (OHC) which are driven by a timing belt. This design means the valves are directly controlled by the camshaft, and if the belt breaks, the valves can be free to move uncontrolled.
* Piston clearance: The distance between the piston and valves is minimal in an interference engine. When the timing belt breaks, the valves can collide with the pistons, causing significant damage.
Therefore, it is crucial to maintain the timing belt and replace it at the recommended intervals to prevent potential engine damage.
