Originally Posted by
Triplecrank92
Or PB Blaster and same approach. Turn it upside down, remove BB and fill up the downtube with a lot PB Blaster and.......wait!
And the key word there is "wait". It does you no good to spray a penetrant oil on a part and immediately start wrenching on it. It takes time, and often multiple applications of the penetrant, to work. Overnight is good, or, if it's really stuck, a couple of days, adding penetrant each day.
Patience, grasshopper.....