I have 80 Series land cruiser Manual Transmission 1hdt.
The car starting making random screching noise that would come anytime from front end but specially when car was going up a bridge. I had the front differential drained but all that came out was mostly grease. The person doing the oil change job said the differential must not have seen any oil change for long buy I remember I did this 2 months ago soon after I got the car. I showed it to a mechanic two days later and asked him to do an oil change and all that came out was again black greasy substance.
My questions:
1- Should i keep repeating oil change after say every week till the diff gets clean?
2 - Is it possible that grease from Axle is making its ways to the diff? I had the hub seals / bearings replaced around 2 months ago with which diff oil was also checked (that mechanic said he replaced the diff oil but it wasn't done before my eyes).
Appreciate any help
(@Xulfiqar Sir.