Ahhh, still sticking to the typical Amsoil line of BS, lol.There is a difference in what we each wrote and believe, it seems. I don't believe Amsoil will recommend a product that won't perform as well as the Polaris recommended product. The weight of the product may be slightly different than the ADVERTISED weight of the OEM's product, but chemical compatibility and performance will be the same or better, just as the test you sighted demonstrates.
You said IF IT MEETS SPECIFICATION.
It didn't meet specification on the top number or the bottom. Neither.
I noticed you put the ADVERTISED in caps to imply that the Polaris oil is not actually 50 but just advertised as 50.
Typical Amsoil dealer BS.
The test DID NOT demonstrate that the Amsoil was compatible or that performance was the same or better. In fact it clearly indicates that the Amsoil didn't meet the 50 specification while it shows that the PS-4 clearly is a 50 oil.
You need to take the Amsoil glasses off and really look at that graph.