
Need opinions on what I should do with this thing
Picked up this 08 6.6L Duramax with 345000 miles for $500
Has a banks air intake and I believe a tune as well
It seems to run pretty well and has zero blow by
The issue is it most likely needs a rear differential or axle/bearing
The previous owners never had it fully diagnosed
Currently it grinds at speeds up to 40 and also gets worse when braking
Overall it could be axle, diff, brake system, etc…
How much is too much to spend on repairs for something like this? Or should I not put any money into it and sell it as is
I don’t want to sell it currently