Originally posted by BaldEagle
What do all those numbers mean? Why such a variance in the Boron and Molybdenum totals?
I'm no oil expert. I'm sure a petroleum chemist on this forum can provide more insight. Common sense tells me . . .
the fewer metallic particles like iron and aluminum in the oil, the better.
I have no clue what boron is doing in the oil. MS Encarta says:
It is a trace element needed for plant growth, but toxic in excess. Research suggests that it is also nutritionally important for bone health in humans and other vertebrates. . . .The boron compounds of industrial importance include borax (Na2 B4O7· 10H20), boric acid (H3BO 3), and boron carbide (B4C). Borax is used in cleaning compounds, glass and ceramics, fertilizers, paper and paints, and fire retardants. Boric acid is used medically for its astringent and antiseptic properties. Boron carbide is used as an abrasive and alloying agent.
Okay, I must admit the Mobil1 halfway filled a super clean (alcohol rubbed) glass jar for almost a week, and since borax is used in glass . . . who knows? As for molybdenum, is it not a lubricant additive? I'll wait for our web-resident specialists to explain.
My purpose in undertaking these tests was not to dissect the chemical properties of these competing oils, but rather to answer the question in a quantitative manner: "Will using 5w-20 oil, when the manufacturer clearly states a recommendation of 5w-30, damage my engine?" I didn't want to keep guessing and I didn't want to add my voice to the threads of ignorant passion I've come across. Opinions about lubricants need to have some basis in fact rather than pure speculation. "I like this oil, I like that oil, that weight is too thin, too thick, its got super mysterious additives . . ." blah blah bleh blah
It helps answer the question: "But how do you know?"
If the oil you use consistently resulted in a 50% increase in iron particles in your drained oil compared to the next brand, would you continue to use it? Especially if the cost of the alternative was slightly lower or the same? I don't know if I'm actually reducing metal wear by 50% until I've completed several more tests over a long period of time, but at least I know I'm in the right direction. I'm convinced it is a superior oil, regardless of the degree. To each his own. But at least you can't say no one has been able to produce numbers.