My 2006 manual shows to change the gear oil every 50,000 miles. Then again, it also calls out the wrong axle so...
Dutch_12078 wrote:
My 2001 F53 Owners Manual says the differential is lubed for life with a full synthetic.
"Your vehicle’s rear axle is filled with a synthetic rear axle lubricant and is considered lubricated for life. These lubricants do not need to be checked or changed unless a leak is suspected, service is required or the axle assembly has been submerged in water. The axle lubricant should be changed any time the rear axle has been submerged in water."
