SOHC.co.uk Forums > CB500/550
silicone or standard brake fluid
McCabe-Thiele (Ted):
--- Quote from: mickwinf on October 11, 2023, 11:17:58 PM ---Thanks for replies, I have only done caliper up to now with a smear of red grease around the seal would it be better to replace with silicon grease?
--- End quote ---
For the relatively small quantity I don't see it as an issue for affecting the fluids performance. An extra brake bleed after a few weeks might ease any concerns.
K2-K6:
--- Quote from: mickwinf on October 11, 2023, 11:17:58 PM ---Thanks for replies, I have only done caliper up to now with a smear of red grease around the seal would it be better to replace with silicon grease?
--- End quote ---
There's not an incompatibility issue as far as I'm aware, its more the performance of silicone against water ingress is most effective in this location, next to water coming off the disc in wet weather. That's the only consideration and not a worry otherwise.
To give a more described picture of this:- These caliper design have no cover in a secondary seal like many road calipers have nowadays, with the silicone grease intended to mitigate this function from that aspect. The service interval would likely be arranged on that basis.
Any use in salty Road conditions is the ultimate concern as that provides an electrolyte to cause galvanic corrosion in the caliper bore to produce that familiar dry powder within the seal groove.
Bryanj:
Never used any grease on calipers seals just brake fluid
Trigger:
I have used OKE brake DOT 5 on all my bikes for a few years now and it is great ;)
AshimotoK0:
--- Quote from: Trigger on October 12, 2023, 07:13:24 AM ---I have used OKE brake DOT 5 on all my bikes for a few years now and it is great ;)
--- End quote ---
Got confused when I looked up DOT5 and some products came up with DOT5.1 ...evidently that stuff is more like DOT3 and 4 and not silicone.
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