Nissan 370Z Forum - View Single Post - Increased Valve Noise After Change To Amsoil

jpit · 08-29-2010, 01:35 PM

The G37 suffered from valve train noise and the solution was a software upgrade and using the Nissan ester oil. Road and Track was using Nissan ester in their long term
370Z and then switched to a conventional 5W-30 to see what would happen to the noise level. Valve train noise went up with the conventional oil. General consensus is that the increased valve train noise will not harm the engine.

08-29-2010, 01:35 PM	#7 (permalink)
jpit Enthusiast Member Join Date: Feb 2009 Location: Washington State Posts: 440 Drives: 370Z Tour MT w/Spt Rep Power: 16	The G37 suffered from valve train noise and the solution was a software upgrade and using the Nissan ester oil. Road and Track was using Nissan ester in their long term 370Z and then switched to a conventional 5W-30 to see what would happen to the noise level. Valve train noise went up with the conventional oil. General consensus is that the increased valve train noise will not harm the engine.