Try a rubber vacuum cap used for plugging emissions ports to cover the bleeder, completely. Pick one that fits tight, and just long enough to sit flush, or close to it, with the caliper. The bleeders will be better protected from the elements than just using the dust cover that covers just the tip.

 

It isn't 7mm...........

 

depending on how rusty the bleeder has gotten, i could see an 8mm/ or 5/16" bleeder corroding to the point where a 7mm could be tapped on. (or it's a really worn 7mm socket)

 

LOL, Lucky that I had a 0.275591" socket and open end wrench that fit snugly on the '91. I'm in NM and fortunately the bleeder screws don't corrode at all.

 

If any moisture contaminates the brake fluid (fluid luvs aqua) it happens from the inside out, change it every few years.

 

Must be nice. I wish I had that problem.


I have noticed that some manufactures suggest changing brake fluid every two years regardless of mileage because of moisture absorption. Volvo and Subaru are some of the ones that I have come across that actually suggest it in it's mileage based intervals. Newer BMWs and even MB will have a display pop up suggesting it be serviced. Companies like Honda, Toyota almost all the domestics, don't mention any interval, time or mileage wise, on when to actually change fluid and rely on the tech to actually test the fluid with a strip for when it's time for service.

 

Brake fluid doesn't get changed often enough.

I do it every couple of years, and always on a newly purchased used vehicle.