Help removing old brake fuild from the frame

Please tell me how you would approach removing twenty year old brake fluid .
I was thinking about starting with brake cleaner, yes?
I want to paint the bad spots with Rustolyum.
Thank you
JD

Brake clean a rag and elbow grease just dont spray and plastic parts

I can't believe how filthy this bike is.
Every nut and bolt is coming off.
I have been finding that engine degreaser and a tooth brush is a good start on some of the nastier spots,followed up by the brake cleaner and a tooth brush again and more brake cleaner, then wipe it off.
At this point I have been taking a wire brush to it, look at all the rust :pinch:

I'm also using a good cordless drill with a bunch of different size wire wheels and getting everything.
Using the reverse on the drill is turning out to be very helpful.
everything gets a final wipe down with acetone and then I'm brushing Rust-oleum (rusty metal)primer on the bare metal in an effort to work it in better, and following up with spray primer from a can.