Mountain Bike Reviews Forum banner
1 - 3 of 3 Posts

·
Dream it, Do it.
Joined
·
1,780 Posts
Discussion Starter · #1 ·
How much does mineral oil expand vs hydraulic fluid? I have XT 775 discs and had a problem with dragging brake pads when the brakes got hot. I seem to have mostly fixed the problem by bleeding out some brake fluid. Will mineral oil expand enough to cause pads to drag?
 

·
Registered
Joined
·
348 Posts
I also have XT 775 discs...I changed from Shimano Mineral Oil to Pentosin... HUGE improvement in stopping power.

I had the same issue with my XT's rubbing a bit initially, after switch they are great. No rub. Whether or not it is related to the fluid I dont know.
 

·
Super Moderator
Joined
·
6,784 Posts
Yes, but its only temporary and is much friendlier than corrosive DoT fluid. My XTR M965 did it - but when I upgraded to lighter, Magura Marta SL....the issue was non-existant. Magura rules!
 
1 - 3 of 3 Posts
Top