A professional mechanic might complete the job in 1-2 hours. However, a novice could easily spend 4-6 hours or more, especially if they encounter unexpected difficulties.
Factors that can increase the time include:
* Rust and seized bolts: Older vehicles often have corroded bolts, making removal challenging and time-consuming.
* Lack of proper tools: Having the right tools (sockets, wrenches, torque wrench, etc.) is crucial for efficiency.
* Unexpected complications: You might find other issues during the process (e.g., a cracked hose, damaged thermostat) that require additional time and parts.
It's always recommended to consult a repair manual specific to your vehicle's year and engine. This manual will provide detailed instructions and estimated times. If you lack experience, taking it to a mechanic might save you time and prevent potential damage.