locker and friction modifier

[86isuzu]

Quick question.
Long story short, my mechanic refused to fill my differential without friction modifier, even though I have a lock-right, and not a limited slip. Is this in any way detrimental?

 

[Hahnsb2]

Quick question.
Long story short, my mechanic refused to fill my differential without friction modifier, even though I have a lock-right, and not a limited slip. Is this in any way detrimental?

Your mechanic is a jackass. FM isn't needed wth a locker, shouldn't hurt anything but it's not needed.

 

[4x4junkie]

Hopefully he didn't bill you for that FM...

Like said, 100% unnecessary with a LockRight locker, but harmless.

 

[86isuzu]

He did bill me, but it wasn't much. Thanks for the info. I didn't think it would harm anything, just wanted to make sure

 

[88_Eddie]

the FM is meant for the clutches in a LS

 

[AllanD]

actually friction modifier is to make clutches in limited slips grab LESS
so soccer moms driving their Explorers to the mall to get their pedicure
won't ask "What's that funny noise when I pull into a parking spot?