jon928se

WD40 has only two useful properties in my opinion - remvoing tar from wheels and removing sticky labels from (NON RUBBER) parts.

Anti sieze on the threads of the double flare brake line fittings can only contaminate the brake fluid if you smear it all over the double flare on the end of the pipe. Avoid this by sliding the fitting away from the flare before applying anti seize.

When I had the same problem that THeo had with the fitting siezed on to the hard line I ended up replacing both rear lines from the T piece out to the flexi connection.

Mrmerlin

use anti seize on the bleeders as well, as far as contamination you might get some anti seize into the line if you glop it on, so some discretion is needed just a bit on the threads and some on the inner portion of the hard line where the inner nut slides,
WD 40 shouldnt hurt anything unless your immersing something for a long time, it is after all made from fish oil and other ingredients.
I would really suggest that PB blaster be used for loosening the flare nuts it has better soak in properties

TheoJ

well.... it wasn't actually WD40 It is stuff called IMAL, something that may not be available in the US. It is a very good penetrating oil, using some graphite to lubricate. Pretty good stuff actually, better than the generic WD40. You need to be careful not to mix all that into the brake fluid. But since I was removing the brake hose anyway and bleeding the system, there was not much that could happen.

Just out of curiosity: how many people had great results breaking loose the flare nut by freezing the hell out of it?

regards

Optimator

PB Blaster is what I soaked one of the flare nuts in for a couple of days. In this case, it had no effect at all. Another important, if obvious comment here is that you can't use much mechanical force to help it along - it doesn't take much force to twist the brake tubing (bad!).

I recall reading on some thread awhile back that a 50/50 mixture of acetone and hydraulic oil will outperform any currently available penetrating oil products.

Nightfly

I think it was acetone and ATF. I had been using Liquid wrench, but want to try this CRC freeze off stuff. I've been using freon 134 to chill my frozen nuts and bolt threads, but if they make a dedicated fluid for it, it's probably a better idea.

chrly924s

I've been using this since reading that. I'm starting a bunch of projects on my 83, starting w/shocks, and this mixture works great. And it's cheap!!

Fogey1

That thread was from Wally P, back on July 1st.
https://rennlist.com/forums/showthre...hlight=acetone



will

Imo000

Are these lines DOT approved?

Jim bailey - 928 International

YES , DOT legal..... and they work just fine.

ROG100

My complete set of 4 SS Braided hoses are $75 and include all the crush washers.
Roger