How can you find out if the diff oil was changed on break in? The service book doesn't have an entry for diff oil. Would the dealer have a documentary record? I don't think that I was given any paperwork.
Current Cars: M5 (F10) / Porsche 911 Turbo (997) / X5 40d Msport
Previous Cars: M5 (E60) / M3 (E46) / TVR Cerbera