Autopapyrus · Nissan Micra 1.5 dCi (2019)
https://autopapyrus.com/guides/nissan/micra/coolant-replacement/

Compiled automatically from service literature and owner experience. Specs are for the typical configuration — check them against your exact car before you start.

Nissan Micra 1.5 dCi (2019): Coolant Replacement

The total cooling system capacity of the 1.5 dCi is about 7.8 L (8.2 qt). The replacement interval is usually 5 years or 90,000 km, whichever comes first. Not all of the coolant drains out, so for a full replacement it is best to do 2 drain-and-refill cycles. Work only on a cold engine.

Difficulty: Medium Time: 1-1.5 hours Steps: 10 Tools: 10-13 mm wrenches and sockets for the engine undertray, flat screwdriver or pliers for hose clamps, 8-10 L (2.1-2.6 gal) drain pan, funnel, clean rag, gloves

Part

🔩 Long-life ethylene glycol-based coolant that meets the Nissan specification for this engine. You need about 4-5 L (4.2-5.3 qt) of concentrate plus distilled water, or 8 L (8.5 qt) of ready-mixed coolant. Do not mix coolants of different types or colors

There's a full repair manual for this car Every system, wiring diagrams and torque specs — not just this job. Haynes and 7 more. See manuals →

Step by step

10 steps

Park the car on level ground, shut off the engine and let it cool for at least 1-2 hours. Do not open the expansion tank cap on a hot engine: the system is under pressure and you can be burned.
Open the hood and remove the plastic engine undertray, if fitted. If necessary, raise the front of the car on a lift or jack stands. Never work under a car supported only by a jack.
Turn the ignition on without starting the engine. Set the climate control to maximum temperature so the heater valve opens and coolant also drains from the heater core.
Unscrew the expansion tank cap. Place the drain pan under the radiator. Find the drain plug at the bottom of the radiator and carefully unscrew it. If there is no plug, loosen the clamp and remove the lower radiator hose. Let the coolant drain completely.
If possible, also drain the coolant from the engine block. Check the exact location of the drain point on the 1.5 dCi block on the car itself. Do not break the plastic fittings by force.
Close the plug or reinstall the hose and tighten the clamp. If the drained coolant was rusty or contains sediment, flush the system with distilled water. Fill with water, warm up the engine, drain it, and repeat until clean water comes out. Do not flush the system with tap water.
Pour new coolant into the expansion tank up to the MAX mark. Fill slowly to avoid air pockets. If there are bleed screws or bleed fittings on the upper hoses, open them until coolant flows out without bubbles.
Close the tank. Start the engine with the climate control at maximum temperature and let it run at 1500-2000 rpm until the thermostat opens. The radiator hose should become hot and the fan should turn on. Top up the coolant in the tank from time to time.
Shut off the engine, let it cool and check the level. Top up to the MAX mark. Repeat the warm-up and check once more to make sure the air is out and the level is stable.
Check for leaks under the car and around the clamps, then reinstall the engine undertray. Over the next few days, check the level on a cold engine.

Common mistakes and warnings

Coolant is toxic and dangerous to animals because it tastes sweet. Do not leave open containers around, and take used coolant to a recycling facility instead of pouring it on the ground. An air pocket in the system leads to overheating and possible cylinder head gasket damage. If after the replacement the temperature fluctuates, the cabin stays cold while the engine is hot, or the level drops, stop driving and bleed the system again or take the car to a repair shop. Follow the manufacturer's specifications for the tightening torque of the drain plug and clamps: do not overtighten plastic parts.

How it works · 3D How the Engine Cooling System Works How the part you're working on actually works — in plain English, on a 3D model. Open in 3D →