Ok, So i hear a grinding sound, always when i go to reverse but not every single time i put it in reverse...

So here are my newbie Q's:

1 - Is "grinding" that is mentionned in the posts here refer to both reverse AND all the other gears or both, or either?


2 - So how long before i have to change clutch? And how much does it costs with installation labor? (i have N/A d15b7, 160,000 miles on it)

Thanks in advance for the input.