
Drain the old coolant, then flush the fluid channels with clean water. After draining, add the new coolant through the radiator hose, which allows the coolant to flow quickly into the radiator. Then, add another bottle of coolant to the coolant reservoir until it is nearly full. The detailed steps are as follows: 1. Comprehensive Inspection: Before completely replacing the coolant, conduct a thorough inspection to check for any signs of leaks or cracks in the pipes, with a special focus on the five-way hose. 2. Five-Way Hose: The five-way hose gets its name from having five connection points to various parts. The coolant is distributed to different sections of the car after flowing through the five-way hose. If there are signs of coolant leakage in this part, replace the hose or resecure the connections as needed.

I've been driving a Nissan Sylphy for several years and have changed the coolant myself a few times. It's quite simple, but don't rush. First, make sure the engine is completely cold—wait at least an hour to avoid burns or damaging components. The radiator drain plug on the Sylphy is usually located under the front of the car, near the right front wheel, so you'll need to crouch down to find it. Prepare gloves, new coolant (preferably the Nissan-recommended type for the Sylphy), and a bucket to catch the old fluid. Unscrew the drain plug and let the old fluid drain out, which may take about ten minutes. After draining, tighten the plug. Before adding new coolant, it's advisable to do a simple flush: pour some clean water into the coolant reservoir, start the engine, let it run for a few minutes, and then drain it again. Next, add the new coolant slowly through a funnel into the coolant reservoir until it reaches the full line. Start the engine to let the system bleed air automatically. Once the RPM stabilizes, check the coolant level and top it up if necessary. Note that old coolant is toxic—don't pour it down the drain; take it to a repair shop for proper disposal. Generally, the Sylphy requires a coolant change every two years or 20,000 kilometers to maintain a healthy cooling system and prevent freezing or overheating issues.

I was a bit nervous the first time I changed the coolant by myself, but the Sylphy's design is very user-friendly. First, find a flat spot in the garage and wait for the car to cool down before starting. Key tools: a pan to catch the old fluid, a bottle of new coolant (the blue Nissan type is suitable), and basic wrenches. Open the hood—the Sylphy's coolant reservoir is located at the front right corner near the windshield, with the cap open. The drain plug is at the bottom of the radiator, requiring you to crouch under the car—be careful not to cut yourself. Unscrew the plug, and the old fluid will gush out; I had to patiently wait for it to drain completely. Before adding new coolant, give it a quick rinse by pouring in some distilled water, running the engine briefly, and draining it again. Then, pour in the new coolant, but don't overfill it. Start the engine to warm it up—it will bubble as it vents air. If the level drops, top it up to ensure stability. The entire process should take no more than half an hour. Beginners, remember to wear safety goggles—safety first! Be sure to recycle the old coolant properly.

Changing the coolant for the Sylphy is actually super straightforward. Wait until the car is cool, then locate the radiator drain plug, usually at the bottom right corner. Unscrew it to drain the old fluid, using a bucket to catch it and avoid spills. Once fully drained, tighten the plug, pour new coolant into the reservoir, and don't forget to start the engine for a few minutes to let air bubbles escape. Then, check the fluid level and top it up if needed. Ensure good ventilation throughout the process.


