Apparently right on time like every late January … Got air bubbles in my brakes from the cold, had to bleed them out! 🚲 ❄️

The internet recommends DOT 5.1 Fluid for extreme cold in mountain bikes rather then mineral oil. I currently run a blend of mineral oil and DOT 3, as ran out of mineral oil last winter due to cold weather leaks (and worn pads which I replaced).

It wasn’t particularly low this time when I did a lever bleed, just air bubbles were causing the front brake to be mushy. Doesn’t help brake preformance that I tend to get grease on the rotators, as I use extra grease on the hubs to help keep the bearings free of water and salt in winter. I actually had CRC Brakeleen out this morning to clean off the basket latch and cleaned the rotators at the same time…

I don’t think that caused the issue, they were soft yesterday too in the was cold, if anything the Brakeleen helped strip off the grease and improve stopping. I tell you though, the Brakeleen sure makes you light headed at 7 AM.