My 2007 4.2 ZF auto had some sluggish gear changes yesterday. At 98,000 miles, it must be overdue for a gearbox fluid change.
I was going to replace the fluid, filter, gasket and sump plug washer, but I've noticed some kits online that include a new gearbox sump and the 20 bolts securing the sump.
On other cars I have not replaced the sump before. Is there a particularly good reason to change the sump and bolts too?
I was going to replace the fluid, filter, gasket and sump plug washer, but I've noticed some kits online that include a new gearbox sump and the 20 bolts securing the sump.
On other cars I have not replaced the sump before. Is there a particularly good reason to change the sump and bolts too?