Member Contributer FJ12Ryder Posted April 29, 2014 Member Contributer Share Posted April 29, 2014 I first put DOT 5 silicone brake fluid in my FJ about 15 years ago. I've had no leaks, and brakes and clutch work fine. Maybe I just got lucky, but that is my experience. I never changed any of the seals before I went to silicone fluid, just flushed things as well as I could. Link to comment Share on other sites More sharing options...
Member Contributer gll429 Posted April 29, 2014 Member Contributer Share Posted April 29, 2014 I first put DOT 5 silicone brake fluid in my FJ about 15 years ago. I've had no leaks, and brakes and clutch work fine. Maybe I just got lucky, but that is my experience. I never changed any of the seals before I went to silicone fluid, just flushed things as well as I could. no you didnt get lucky.. well maybe for the lines. here ths thing the dot 3/4 as people keep pointing out.. absorbs moister.. meaning it also shrinks rubber seals.. silicon will counter that effect when mixed by mistake with dot 3/4 making the seals expand to far and making hoses rubbery... thus effecting the power of the brakes Link to comment Share on other sites More sharing options...
Member Contributer FJ12Ryder Posted April 29, 2014 Member Contributer Share Posted April 29, 2014 If you mix silicone fluid with DOT 3/4 fluid you have a serious situation. The result is a semi-viscous mess that can really screw up things. It didn't happen to me but I did get some silicone fluid mixed in with DOT 3/4 in a container and ended up with lumps of nasty stuff on the bottom. I don't know what would happen if that occurred in brake lines/calipers, but it couldn't be good. Link to comment Share on other sites More sharing options...
Member Contributer gll429 Posted April 29, 2014 Member Contributer Share Posted April 29, 2014 If you mix silicone fluid with DOT 3/4 fluid you have a serious situation. The result is a semi-viscous mess that can really screw up things. It didn't happen to me but I did get some silicone fluid mixed in with DOT 3/4 in a container and ended up with lumps of nasty stuff on the bottom. I don't know what would happen if that occurred in brake lines/calipers, but it couldn't be good. yes. but its NOT instant. in fact it can take months ., whats happens sooner is the chem reaction to the lines and seals. Link to comment Share on other sites More sharing options...
Member Contributer JZH Posted May 1, 2014 Member Contributer Share Posted May 1, 2014 "Protecting the paint" sounds like a bizarre reason to switch brake fluids. The only time I've ever damaged anything with brake fluid was when I tried to blow out some caliper pistons with compressed air--never tried that again! Ciao, you never had a $20,000 paint job and dot 3 or 4 will leave stains and eventually destroy the area it keeps dripping on.. as the poster says his bike weeps it.. Oh, I dunno...maybe I'd just fix the bloody leak? Ciao, Link to comment Share on other sites More sharing options...
Member Contributer gll429 Posted May 1, 2014 Member Contributer Share Posted May 1, 2014 "Protecting the paint" sounds like a bizarre reason to switch brake fluids. The only time I've ever damaged anything with brake fluid was when I tried to blow out some caliper pistons with compressed air--never tried that again! Ciao, you never had a $20,000 paint job and dot 3 or 4 will leave stains and eventually destroy the area it keeps dripping on.. as the poster says his bike weeps it.. Oh, I dunno...maybe I'd just fix the bloody leak? Ciao, yep and when you change the fluid and miss a rop..( god forbid).. and it screws up your perfect NR750, dont blame me. Link to comment Share on other sites More sharing options...
Member Contributer JZH Posted May 2, 2014 Member Contributer Share Posted May 2, 2014 "Protecting the paint" sounds like a bizarre reason to switch brake fluids. The only time I've ever damaged anything with brake fluid was when I tried to blow out some caliper pistons with compressed air--never tried that again! Ciao, you never had a $20,000 paint job and dot 3 or 4 will leave stains and eventually destroy the area it keeps dripping on.. as the poster says his bike weeps it.. Oh, I dunno...maybe I'd just fix the bloody leak? Ciao, yep and when you change the fluid and miss a rop..( god forbid).. and it screws up your perfect NR750, dont blame me. You got me. Okay, if I ever get an NR, yes I will switch to sillycone brake fluid... Ciao, Link to comment Share on other sites More sharing options...
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