Thanks for sharing on that VOA. Interesting the nice zinc and phosphorus numbers are a good bit higher than what Valvoline specs on their website (1120z/1030p). I know, I know, you are going to share that the amount of zinc doesn’t provide more protection, it just makes the protection last longer since it is a sacrificial additive. And I am gonna disagree in advance, just to save some time later.
You're welcome Bonz and whether we believe it or not... the objective
truth is the more zinc doesn’t equal more protection, it just equals
longer protection since it is a sacrificial additive..
Zinc is not even a lubricant until heat and load are applied. Zinc is
only used when there is actual metal to metal contact in the engine.
At that point zinc must react with the heat and load to create the
sacrificial film that allows it to protect flat-tappet camshafts and
other highly loaded engine parts.
In our stock engines the majority of zinc is drained away during the
oil change... Just compare your Virgin oil samples versus Used oil
samples to establish the zinc sacrificial rate for your engine...
If we start with 1200 ppm zinc and used oil samples shows
1100 remaining then 100 ppm was sacrificed... if you start with 1200
ppm and used oil sample shows 100 ppm remaining them 1100 ppm was
sacrificed... Even at 100 ppm zinc is still ready to be sacrificed and
thus your engine is protected...
Quote Blackstone Labs
Zinc DOES NOT build up on parts like some sort of plating process.
Zinc simply DOES NOT work that way. Zinc that is present in the oil,
is activated by heat and pressure, which is precisely what the oil is
subjected to during extreme operating conditions... not during cold
starts...
The thinking more zinc the higher protection is like thinking the more
gas in our tank the higher the power output when actually the more
zinc the longer the protection