This oil ranked a pathetic 85th out of the 94 new oils I’ve tested so far. These claims were obviously created by the Marketing Department with no regard for what this oil can actually do. Problem is, this oil fell FAR SHORT of living up to that inflated boasting. Provides excellent protection from metal to metal contact. * The additive package contains 1800 ppm ZDDP, providing levels of protection unattainable from conventional motor oil. * Double the zinc for superior flat tappet cam protection. The bottle makes some bold claims, such as: The oil is:ġ0W40 Summit Racing Premium Racing Oil, API SL conventional
And every single oil was tested EXACTLY THE SAME, so they all had the same opportunity to perform as well as their chemical formulation would allow.īut, before we get into the ranking list of those 40 oils, let’s take a closer look at one of those oils in particular. The tests were repeated multiple times for each oil, and even though all the results for each oil were consistent within a few percent, those results were averaged to arrive at the most accurate and representative final psi numbers shown below. The following group of 40 oils have zinc levels above 1100 ppm, and are ranked according to their “load carrying capacity/film strength”, or in other words, their “wear protection capability”, at 230*F. So, no matter what zinc fans might “believe”, there is such a thing as "too much of a good thing". And it was also found that ZDDP above 2,000 ppm, started attacking the grain boundaries in the iron, resulting in camshaft spalling. However, true zinc lovers will no doubt be disappointed, because not all high zinc oils tested well, even though they all have plenty of zinc.Īnd keep in mind for comparison with the oils below, that earlier oil industry testing has found that above 1,400 ppm, ZDDP INCREASED long term wear, even though break-in wear was reduced. That way, all the oils are on an even playing field. However, to keep everyone’s blood pressure down this time, we’ll look at ONLY HIGH ZINC OILS here. But, the fact is, behavior like that will NOT change the facts regarding what oils provide excellent wear protection and what oils do not. Some folks, who REALLY believe the notion that more zinc in their oil will provide more wear protection, often throw a tizzy fit and get very nasty when test data shows a low zinc oil providing better wear protection than a high zinc oil. And “Wear Testing”, RATHER THAN ZINC LEVELS ALONE, can show us how various oils stack up against each other regarding wear protection capability, as you will see in the real world test data below. Anyone would have to be delusional to think otherwise. And some oils are simply better than others, no matter what their zinc levels are. But, the truth is, like all things in life, motor oils are NOT all created equal.
Though, there are some folks who are extremely set in their beliefs about what they’ve always been told and read, regarding high zinc oils providing excellent wear protection. And we can use that information to make an informed decision as to which oil we want to select for our engines. The results show us how various oils compare when it comes to wear protection. Most technically inclined gearheads understand the value of real world, motor oil “load carrying capacity/film strength” testing. Then drain that "Break In Oil" & change to a different oil, still containing proper levels of ZDDP, but now using an oil with a HIGHER PSI rating for wear.Īs always comments & varying opinions encouraged!!!.Mark What I now would consider as beneficial to breaking/running in a NEW engine with the oil with the HIGHEST ZDDP content.
Hello Fellow Enthusiasts Thought this was a Good Read & might possibly help others.
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