Frxdy
Member
Yes, a dealer may analyze your to see if it meets specs, but they can NOT void a warranty claim because you did not use "their" oil. There was a quiet court case (In the 90's?) when Bombardier said you MUST use their oil for the snowmobiles they produced. When it got in front of a judge, the court basically said: "If you mandate a customer use your brand of oil, you must supply it at no charge. If you decide to not supply it for free, you are required to tell the customer what oils meet your specs".