It could be the VLSD, they are only meant for light use. When the Diff Fluid (not the oil) heats up it won't work and will be an open diff until it cools off again. The sport diff will only last about 50K miles of street use before the hydraulic fluid wears out, tracking will wear it out much quicker so I would plan on getting a new, proper one sooner then later being at 33K miles.
|