I have been putting Mazda Oil and then Zepro with moly into my CX-5 2015 since the beginning for 50k miles. Now I dont see Zepro with moly on Amazon and the regular Zepro price doubled. I barely put 7k miles a year. Should I switch to Castrol Edge or go with the hyped up Royal Purple. I dont see Royal Purple saying it contains Moly on the bottle. What has your experience been long term with MPG when using these oils? I live in Los Angeles warmer climate. Thanks