I have always used Honda oil, I dont know the market differences from the US to Canada, but here if you consider the amount required(5 or 5-1/2 quarts per change) oil is not really going to save me that much money. I buy honda oil around $3.50 per quart, I am interested in your question, and the responses you will get on this topic. On a side note, I wonder if anyone knows where you can get oil filters for Rubicons at a good price?