After seeing voa's showing ps4 in the 20w50 range I'm actually considering the mobil 15w50 as it doesn't get very cold in southern nc. Also ps4 extreme is 10w50 so this probably is an excellent choice.
Hey I'm new to the forum. I recently emailed amsoil asking when they would make a 5w50 for us polaris owners. He mailed me back today and told me they were working on such a product now and hoped to release it by the end of the year. Just wanted to pass this along!