It’s fine to use DOT fluid on the threads and olive and skip buying DOT grease in a pinch. If you’re a shop, you should have DOT grease around so you can do it right, but it’s used for very few things, and this is the main one.
Shimano has the same recommendation but they’re opaque as hell about what grease is actually safe to use in their systems, so I always just wind up using mineral oil on the threads.
Ticonderoga_Dixon on
Weird, I’ve never heard of it, I’m guessing 0 % necessary.
BitbeanBandit on
I have done 2 Sram groupset installs on my bikes without it this year and haven’t had any issues at all so far.
Tromperri on
Any grease will be ok.
MariachiArchery on
I work in a shop. We’ve never used it.
What I’ve found, is that it ends up in the hydraulic fluid and can gum up hoses/calipers. Also, if you are doing a lot of bleeds, which we are, it will collect in your syringes and is a huge pain in the ass to clean out and makes bleeding more difficult.
Now, SRAM does say that DOT compatible grease in the hydraulic fluid is fine, but when it starts to accumulate, its not that chill.
jsmiff573 on
Any grease would work….and it’s only a very small amount.
The reasoning is simple… the inside of the hose is plastic, when you screw the majig in, it is cutting threads to insure a tight fit. Without grease you run the risk of the majig become hot and melting the plastic.
An_Professional on
I bought the DOT grease. It’s just the tiniest little tub, and I expect to have it for the rest of my life. I believe another Redditor called it an “heirloom” amount of grease
Bicyclebillpdx_ on
Never used grease for sram or shimano, and I’ve done a few reverb seatposts and more than a handful of brake installs with trimmed hoses. I don’t recall that requirement in literature 15 years ago. Now I’m interested to learn more
maniccanuck on
Very important. I have a code RSC that the ferule seized into the lever i had to replace the entire lever body.
9 Comments
It’s fine to use DOT fluid on the threads and olive and skip buying DOT grease in a pinch. If you’re a shop, you should have DOT grease around so you can do it right, but it’s used for very few things, and this is the main one.
Shimano has the same recommendation but they’re opaque as hell about what grease is actually safe to use in their systems, so I always just wind up using mineral oil on the threads.
Weird, I’ve never heard of it, I’m guessing 0 % necessary.
I have done 2 Sram groupset installs on my bikes without it this year and haven’t had any issues at all so far.
Any grease will be ok.
I work in a shop. We’ve never used it.
What I’ve found, is that it ends up in the hydraulic fluid and can gum up hoses/calipers. Also, if you are doing a lot of bleeds, which we are, it will collect in your syringes and is a huge pain in the ass to clean out and makes bleeding more difficult.
Now, SRAM does say that DOT compatible grease in the hydraulic fluid is fine, but when it starts to accumulate, its not that chill.
Any grease would work….and it’s only a very small amount.
The reasoning is simple… the inside of the hose is plastic, when you screw the majig in, it is cutting threads to insure a tight fit. Without grease you run the risk of the majig become hot and melting the plastic.
I bought the DOT grease. It’s just the tiniest little tub, and I expect to have it for the rest of my life. I believe another Redditor called it an “heirloom” amount of grease
Never used grease for sram or shimano, and I’ve done a few reverb seatposts and more than a handful of brake installs with trimmed hoses. I don’t recall that requirement in literature 15 years ago. Now I’m interested to learn more
Very important. I have a code RSC that the ferule seized into the lever i had to replace the entire lever body.