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I'm using Dot 5 (silicone) because, despite the very slight temperature related performance reduction, it:

1. Does not absorb moisture at all. I contacted Penrite to ask about recommended change intervals - they said they could not advise one as it should not degrade over time. Mine's been in for 4 years and still looks clear as a bell.

2. Will not corrode internal brake parts or damage paintwork, etc in case of spillage.

For road riding I believe silicone is a very clear winner over glycol (Dot 3, 4 & 5.1)!!

Cheers


Edit: I know change-out is a PITA with all the disassembly and cleaning - but based on what I now know I would not hesitate to change. It's a no-brainer for new installations such as [USER=1806]@Torontonian[/USER]


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