Here is some basic info on oil and my 6 oil used: Mobil 1 0w-20 full synthetic EP oil life: 4200 miles, 6 months total mileage: 22,600 miles relevant mods: OVT Tune, CS SRI w/ AEM dryflow filter I am running Castrol edge Full synthetic oil (mazda recommended) for the new oil to see if there is any difference and I will see how it does in 6 months
NBw87.