Doubtful that it's "on its way out". It is common for the front seal to leak a little after 40 years and to throw bits of gear lube up on the body.

Just keep following the recommended service schedule as per your owner's manual and check/fill the diff every year or whatever it says.

Ok, just put the back up on ranps. I dont think it the drive shaft on the exhaust but I noticed oil above the diff.....it my diff on the way out???

Ok I have square blocks

You could post a photo so we would know. There are squared lowering blocks and angled lowering blocks. Buy that's not causing the grinding noise. It would only cause a whining noise.

Quess that makes sence that it making that noice on a right turn considering the mufler is on that side. Lowering the gearbox was my next job until it started making this noice. I,ve lowered the rear end with lowering blocks, are these the same as angle blocks?

Mine did that and it was the muffler on the driveshaft. Only happened when turning one direction.

Angle of driveshaft joints won't change from lowering engine or lowering rear -- unless you used angle blocks to lower. If you lowered the engine 20mm, lower the gearbox the same so they are even.

Ok, i,ll have a look tonight

Yeah probably, mine did, you can see the marks on the tail shaft and the muffler or exhaust. If there is enough movement in exhaust hangers, bend them a Little bit away from shaft, I also used shorter rubber hangers. Some times one slips off and I know cause I hear muffler against drive shaft.


They joys of large exhaust, stiff suspension and lowered suspension

Do you think it could be the drive shaft on the exhaust, its a 2 1/2 inch, yep the muffler is close on that side.

Might be diff hitting exhaust or rubbing against tail shaft. Mine did hit till I shortened the rubbers that hold rear muffler. Get some one to sit in car to check.

What exhaust size you got?