I have a 2008 Mini Clubman S with very low miles that I only drive for pleasure. I only put about 2 to 3k miles on it a year. I change the oil on it yearly at the dealer with their Mini approved synthetic oil. I recently had a mechanic there tell me that I could go to an oil change every 2 years with that low of miles driven a year. Is that feasible or should I stick with the yearly oil change regardless?