Nissan 370Z Forum - View Single Post - Using 5W-40 on Z's with no oil cooler

ZoomZ · 05-17-2021, 04:55 PM

Going to W40 will not solve heat issue. Need oil cooler. W40 will just remain more viscous over 30 for a bit longer until it gets too hot and breaks down as well.

I know it can get hot in the South of France, but looking at historical data, July and Aug 2020 never went past 30c.

5W30 should take you way past 40c for a DD and spirited weekends, Specially if its a quality "true" synthetic oil. I'm sure Motul and Liqui-moly are available in France.

05-17-2021, 04:55 PM	#34 (permalink)
ZoomZ Track Member Join Date: Jan 2017 Location: Vancouver, BC Posts: 728 Drives: 17' 370Z Nismo Rep Power: 40312	Going to W40 will not solve heat issue. Need oil cooler. W40 will just remain more viscous over 30 for a bit longer until it gets too hot and breaks down as well. I know it can get hot in the South of France, but looking at historical data, July and Aug 2020 never went past 30c. 5W30 should take you way past 40c for a DD and spirited weekends, Specially if its a quality "true" synthetic oil. I'm sure Motul and Liqui-moly are available in France. Last edited by ZoomZ; 05-17-2021 at 05:07 PM.