Wheel bearing grease in rotor?

[SeattleBoss]

I just swapped out the front factory brake pads on my 2013 Boss and found what looks like wheel bearing grease on the inside of the rotors around the center hole and on the face of the hubs. There was quite a bit of it so I'm assuming this isn't anti-seize from the factory. Both sides had equal amounts. Is this normal?

 

[Grant 302]

Not 'normal' but will happen if you don't have brake ducts and boil the grease out of the hub.
I did the same a long time ago and put the ducts on before my next track day. Never saw the problem again.

 

[302 Hi Pro]

What is the mileage on your 2013 Boss, and does it see track time?

Fortunately hubs are not too expensive to replace.

I’ll be inspecting mine soon as I just noticed a slight squeal noise with light pedal application and then it goes away with more brake pedal.

Thinking this might be a pad wear indicator tab staring to make rotor contact.

 

[SeattleBoss]

It has about 26K and that includes a dozen track events. The factory stock Feredo pad wear indicator is only about 1/16" above the friction material, so that may very well be causing your squeak. That is pretty thin pad if you are braking hard and often. I replaced with Raybestos ST43 which should be really good on the track and decent on the street.

 

[302 Hi Pro]

SeatleBoss:

That’s good info for me, thanks. I plan on doing a full service next week.

 

[Grant 302]

Did it make it out to the barrel of the wheel and look like this?



Maybe it was anti-sieze between the hub and rotor.

 

[SeattleBoss]

No, it never made it's way outside the rotor. Nothing like your photos. I'm reasonably certain that Ford wouldn't use that much anti-seize but it could be possible. The color and consistency sure looks like wheel bearing grease. I'm going to pop the caps and make sure there is plenty of lube remaining.