What type of oil is everyone using in their 170. The reason I ask every time I buy oil at polaris dealer they give me something different. First trip they give me ps-4 5w50 I questioned them because the owners manual says 10w50. They said this is what polaris now recommends. Next trip they give me premium youth atv oil. It seems as if they have no idea what’s going on or they just give you what they have. I have always followed manufactures reccomendations but it seem no one knows what they are anymore. Any help would be appreciated. Thanks