1. Cold Engine Status & Safety Precautions
- Ensure equipment is cold – never open the cap while the engine is hot to avoid scalding coolant spray.
- High temperatures create high internal pressure; opening prematurely can cause severe burns.
- Wear gloves and safety goggles to protect against accidental fluid contact.
2. Correct Type & No Mixing
- Use only manufacturer‑recommended coolant – different brands and colors have varying chemical compositions.
- Mixing is strictly prohibited – can trigger chemical reactions, producing sediment or corrosion.
- Severe cases may clog cooling micro‑channels, causing temperature control failure.
3. Proper Filling Technique & Level Control
- Use a clean funnel – pour slowly along the tank wall to minimize air bubbles.
- Monitor scale markings – keep fluid level strictly between MIN and MAX marks.
- Do not overfill; leave expansion space for high‑temperature volume increase.
4. Air Purging, Circulation & Leak Check
- After filling and tightening – start engine and run heater for several minutes to circulate coolant and purge air.
- After shutdown and cooling, recheck coolant level; top up if necessary.
- Inspect surrounding hoses for any signs of leakage.