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Sounds good. I will do that.
Perfect hemi report, the copper level is likely from moly/esters and/or change in oils since the run on engine at 80k. Did that run at 80k also have lubegard? It really matters not, it is a great report and in a hemi copper 14ppm is nothing. If you see a weaknesses with PUP you see the visc almost at 20 weight. Now, regardless PUP is a low wear oil, often the wear numbers aren't an indication of good or bad versus a similar report if you move up 25% with visc. There is not really a correlation with metal protection of a thicker oil over PUP, but having that thicker oil most of us will suggest is more metal protection. Engine dynamics are how an engine wear, an example is zinc that both encourages good wear and is an anti wear additive, and that makes total sense. So if you try and oil that is a little thicker, it may or may not translate to better wear numbers, but we believe that still provides the engine with better film lubrication. Now if the number got much worse then yes, but none of us would expect that here. That is the short answer, want the long one see the paper in syn thread. Thanks for sharing.
No it was an accident
I don’t remember if the sample at 80k had lubeguard or not. So by looking at this sample what do u think about changing from PUP to Mobil 1 0w30 euro? Is it worth it?
PUP has always been one of my favorite type oils for various reasons, but for a hemi and the issues facing it, I do prefer more additives and heavier base oils. I would ask Travis about the 5w30 m1 euro in your location, but yes I would make the change as PUP has continually migrated down with visc thanks to it's appeasing Uncle Sam, and it has taken a hit for it imo. Furthermore, this industry you need to re-evaluate all the time or just stick with one thing and forget about facts, because it is always changing. RP and Valvoline have had dramatic changes back and forth for 20 years or so. Amsoil as well. For now it looks like the euro's dropped the move for micro thin oil but USA is still heading that way. I trust the euro oils more at this point especially the 0w30's but the entire group should be studied. Yes I would want thicker oil then in the 9's for a hemi, plus additives.
thanks mudge, perfect uoa to prove the point, that wear numbers is a good gauge for how on engine is doing, no as much how an oil is doing, with the exception for those oils out of min spec. Minute movements in wear numbers isn't a gauge here, if the engine had an issue we would see radical changes. Good to view shear as well. That being said, there is a reason why PUP is the favorite oil on the board, a good choice for sure. But we also know what redline does, so thanks again.
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