It is incredibly important that you use the right coolant in your Nissan 350Z. Failure to do so can lead to cooling system failure and possibly even catastrophic failure of the engine itself. To help you make the right decision we have created a quick coolant guide for the Nissan 350Z below.
What Is the Correct Coolant for a Nissan 350Z?
It is generally recommended that you use either Nissan Blue Long-Life or Nissan Green coolant. The main difference between these two coolants is the service life with Nissan Blue lasting a bit longer than Nissan Green. You can read more about the difference between these two coolants here.
Third party coolants will work as well, but the two listed are the most recommended for a 350Z.
Can I Mix Coolants
Nissan states that you can mix their Blue and Green coolants together, however, the mix will have a service life equivalent to the Green coolant. When it comes to mixing different brands together we suggest that you flush the system completely.
When Should the Coolant Be Replaced on an SW20 MR2?
According to Nissan, their Blue coolant should last 10 years or 220,000 km (135,000 miles) from the factory, however some other sources state that the first change should be around 7 years or 170,000 km (105,000 miles). Future coolant changes with Nissan Blue should be every 5 years or 120,000 km (75,000 miles).
Nissan Green Coolant has a shorter service interval than Nissan Blue with changes needed every 4 years or 96,000 km (60,000 miles).
What are the Signs of Bad Coolant?
If the coolant in your Nissan 350Z is brown or muddy it needs a change. Additionally, if you notice that there are any oily bubbles in your coolant you have big problems that need to be addressed immediately. Oil in the coolant suggests that the head gasket has blown or that the cylinder head is cracked. Another sign of this problem is milky coloured coolant.
Now make sure you check out our Nissan 350Z Buyer’s Guide!