AMSOIL Advantage Low Noack oil volatility % reduces engine oil consumption and reduces the amount of “crankcase oil vapour” that gets drawn into the intake via engine vacuum from the PCV system. This reduces or eliminates oil residue coating the inside of your intercooler, throttle body, intake manifold, and on the intake valves.
This also helps to maintain the perfect air to fuel mixture in your cylinders because you eliminate having to burn “crankcase oil vapours” which in turn maximizes your power output. Oil vapour reduces your octane rating because it has to burn with the fuel that was injected. As you know oil is harder to burn so it’s mixed with fuel for emission reasons, that oil is not as combustible as fuel so it has the potential to ignite when it was not supposed to. Pre-ignition or “detonation” is when the air/fuel mixture in the cylinder ignites before the spark plug fires. PCV Oil vapour reduces efficiency and causes increased emissions since oil vapour is hard to ignite it burns dirty.
Less oil vapour being burned means that the catalytic converter substrate also benefits from not getting poisoned. Catalyst poisoning occurs when the catalytic converter is exposed to exhaust containing substances that coat the working surfaces, so that they cannot contact and react with the exhaust. Reduced emissions output is important for a vehicle’s emission system, the vehicle manufacturer, and the environment!
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NOACK VOLATILITY TEST (ASTM D5800) Defined