Thanks for the replys, from the critisism of SYN3 i`m surprised it rated as high as #4
There's nothing wrong with SYN3 as a motor oil, and as you can tell from that chart there are worse choices out there. Some of those lowest ranking oils have fans that sing their praises (based on advertising hype more than real world results), and some of the highest ranking oils have highly vocal detractors. You'll find the same thing if you start talking about oil filters, air filters, tires, boots, leather jackets, you name it. There is a lot of information floating around that isn't based on scientific testing or anything other than people repeating the hype they've seen or heard elsewhere.
My main problem with SYN3 isn't with the actual oil, it's with the forked tongue folks who market it. Those same folks who told everyone not to use synthetic oils in their Harleys, and intimated that it would void the warranty and cause everything short of the bubonic plague. Then, coinciding with the day they started marketing SYN3, synthetic was good for a Harley. And not just for the engine, but for all 3 holes! Damned amazing, and all accomplished without a single change to the engine, primary, or transmission to accommodate that synthetic oil. I used Mobil 1 15w50 long before there was a V-Twin or a SYN3, btw.
In other words, I wouldn't care if SYN3 had come out rated #1, I wouldn't buy it. I don't appreciate companies that make a habit of lying to the customers, or hiding significant information to make it harder for them to buy other brands.
Jerry