Hi Bob - I don't want to get away from the topic of the original post, but just a few thoughts here. You said that you found signs of moisture in your fluid. If you were using DOT 5, then that should not be possible as DOT 5 is non-hygroscopic. It doesn't absorb moisture. Any moisture that gets into the system would stay between the fluid and the brake line, possibly promoting corrosion of the line.I suspect that the corrosion that you found in your wheel cylinder is the non-absorbed moisture settling in one location. DOT 4 will absorb moisture, keeping the moisture away from the line. BTW, we're talking about tiny amounts here. My other issue with DOT 5 is the reported high failure rate of the hydraulic brake switch on the master cylinder. If I were to go to DOT 5, then I would set up a second switch on the brake pedal, just to be safe. BTW, I use Castrol LMA (Low Moisture Activity) brake fluid in my vintage cars, with very good results so far. Most of us are guilty of not changing brake fluid often enough. I'm probably at the top of the list. :) Ron ----- Original Message ----- From: "Bob Jasinski" <rpjasin@xxxxxxxxxxx> To: "'Brandt Jimerson'" <brandt300g@xxxxxxxxx>; <Chrysler300@xxxxxxxxxxxxxxx> Sent: Thursday, August 05, 2010 1:07 PM Subject: RE: [Chrysler300] G brakes 'jerking' to right > Brandt and all, <snip> > > As a side note on silicone fluid, when I rebuilt my brake system on my G > in > 1978, I put in all new brake components including wheel cylinders, hoses > and > new master cylinder. I flushed the old fluid out and went with DOT 5 > silicone fluid. Thinking I would not need to again flush the fluid > because > it was silicone, and wanting to perform a "test" I suppose, I went 18 > years, to 1996, before I began to experience the same failure, pulling to > one side. I pulled the drum and found leakage in the lower front wheel > cylinder, left side, disassembled it and found water had settled over time > in the lowest spot causing the corrosion. So in 1996 I rebuilt the system > as related above, and have bled the system twice since then, the first in > 2005, and just this last week end. In 2005 the fluid did show some signs > of > contamination and moisture, but this past weekend the old fluid showed > some > discoloration but no signs of moisture, that's why I say 5 years is a > pretty > good period for DOT 5 to be flushed and still maintain safety. > > > > Bob J > > 300G Convert owner since January 1978 > ------------------------------------ To send a message to this group, send an email to: Chrysler300@xxxxxxxxxxxxxxx To unsubscribe from this group, send an email to: Chrysler300-unsubscribe@xxxxxxxxxxxxxxx For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm For archives go to http://www.forwardlook.net/300-archive/Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Chrysler300/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/Chrysler300/join (Yahoo! ID required) <*> To change settings via email: Chrysler300-digest@xxxxxxxxxxxxxxx Chrysler300-fullfeatured@xxxxxxxxxxxxxxx <*> To unsubscribe from this group, send an email to: Chrysler300-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/