I was curious to see how Mercury Verado 25W-50 would do on a VOA. Interesting to notice its very similar to a HDEO oil. Can anybody guess what oil it really is? FYI this oil Retails for $42/gal.
"This looks like a solid diesel-use oil with a strong additive package. The main additives are calcium, phosphorous, and zinc. This oil also uses molybdenum and boron. The viscosity was a quite bit thicker than a 15W-40, but read in the middle of the 20W-50-grade range. The TBN read 9.2, showing plenty of active additive remaining. No moisture or solids were present. This oil should work well for you."
-Blackstone
"This looks like a solid diesel-use oil with a strong additive package. The main additives are calcium, phosphorous, and zinc. This oil also uses molybdenum and boron. The viscosity was a quite bit thicker than a 15W-40, but read in the middle of the 20W-50-grade range. The TBN read 9.2, showing plenty of active additive remaining. No moisture or solids were present. This oil should work well for you."
-Blackstone
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