Does the brake fluid cap screw on / hold pressure?

[hoorah]

So I was thinking of replacing the brake fluid on my wife's pilot. For my car, I have the motive power bleeder with a screw on cap made for european cars.

For the honda, they make some goofy chain-link contraption that I've used on other cars before - it doesn't work. I was considering purchasing a spare brake fluid reservoir cap then drilling and tapping it for an air compressor fitting and bleed the fluid that way.

I don't have the honda in front of me to check, so I thought I'd ask if anyone has tried something like this before.

[N_Jay]

The cap breaths, but maybe through a hole you would drill out for the fitting.

I am not sure if it breaths around the edges.

[hoorah]

Interesting. Maybe I'll try to add a sheet of rubber or gasket material to it to see if I can get it to hold pressure.

Thanks for the reply.

[hoorah]

Just a quick update - I took the brake fluid cap off this weekend to take a look at it. It has a screw on mechanism with a rubber o-ring around the perimeter, so I'm optimistic that this will work. Unfortanately, couldn't find a cap at the auto parts store so I'm going to have to order one or pick up one from the dealer. Will let you know how it works out.

[94eg!]

The OEM cap is two pieces. The grey outer cap that twists on, and the white inner cap with o-ring and level sensor built in. Air can be drawn into the reservoir from between the two. The rubber o-ring is just their to prevent spillage.