Increased Valve Noise After Change To Amsoil

jpit · 08-29-2010, 12:35 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.

Lug · 08-29-2010, 12:44 PM

Quote:

Originally Posted by jpit

General consensus is that the increased valve train noise will not harm the engine.

That may be true but once I put Royal Purple in my engine and my dog died the very next day!

I'm just sayin.......

antennahead · 08-29-2010, 01:49 PM

Quote:

Originally Posted by Lug

That may be true but once I put Royal Purple in my engine and my dog died the very next day!

I'm just sayin.......

Zsteve · 08-30-2010, 07:48 PM

Quote:

Originally Posted by Lug

That may be true but once I put Royal Purple in my engine and my dog died the very next day!

I'm just sayin.......

so thats how you can get rid of the things.

Jordo! · 08-29-2010, 03:43 PM

Quote:

Originally Posted by jpit

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.

My guess is the reflash just smoothed the transitions between various valve settings so make it run a little more quietly and the rest was the Este roil.

That last part is good to know, but who arrived at that conclusion -- R&T?

To the OP, as an experiment, you might try either the Nissan Ester oil or another band (e.g. Redline) on your next oil change and see if the valve ticking subsides.

Kinda curious to see what happens when I switch to the 0-W30 Castrol...

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08-29-2010, 12:35 PM	#1 (permalink)
jpit Enthusiast Member Join Date: Feb 2009 Location: Washington State Posts: 440 Drives: 370Z Tour MT w/Spt Rep Power: 18	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.