Posts by Willyk2
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Hydraulic disc brakes and breakdown
Coconut oil operating temperatures aren’t ideal because its solidification point is 24°C~26°C, so not great.
FYI:
Comparison of emergency fluids (Mineral System only) FluidSolidification (Freezes)Boiling Point (Smoke Point)Verdict for MTB LHM Plus (Auto)-50°C~250°CThe best (reliable and stable) Rapeseed Oil-10°C~204°CBest emergency fluid Sunflower Oil-17°C~232°CVery good (heat-resistant) Olive Oil+6°C~190°CFair (risk of solidifying) Coconut Oil+24°C~177°C (Virgin)Avoid (solid in the shade) Water0°C100°CDanger (boils too quickly) for DOT systems only
A temporary fix should be very short-term, as there are long-term harmful effects.
A crucial point to watch out for:
Warning: This fix ONLY works if your brakes use mineral oil.
If your MTB uses DOT brake fluid (SRAM, Hope, Formula), putting olive oil in will swell and destroy your EPDM seals in just a few hours. DOT and oil are not chemically compatible at all.
Mineral System (Shimano): Seals made of NBR or Urethane (which like oil). => see vegetable oil table
DOT System (SRAM, Hope, Formula): Seals made of EPDM (Ethylene-Propylene-Diene Monomer). => Water or glycol (yuck)
In an emergency, use water—putting vegetable oil in a system designed for DOT is disastrous.
FYI:
Comparison of emergency fluids (Mineral System only) FluidSolidification (Freezes)Boiling Point (Smoke Point)Verdict for MTB LHM Plus (Auto)-50°C~250°CThe best (reliable and stable) Rapeseed Oil-10°C~204°CBest emergency fluid Sunflower Oil-17°C~232°CVery good (heat-resistant) Olive Oil+6°C~190°CFair (risk of solidifying) Coconut Oil+24°C~177°C (Virgin)Avoid (solid in the shade) Water0°C100°CDanger (boils too quickly) for DOT systems only
A temporary fix should be very short-term, as there are long-term harmful effects.
A crucial point to watch out for:
Warning: This fix ONLY works if your brakes use mineral oil.
If your MTB uses DOT brake fluid (SRAM, Hope, Formula), putting olive oil in will swell and destroy your EPDM seals in just a few hours. DOT and oil are not chemically compatible at all.
Mineral System (Shimano): Seals made of NBR or Urethane (which like oil). => see vegetable oil table
DOT System (SRAM, Hope, Formula): Seals made of EPDM (Ethylene-Propylene-Diene Monomer). => Water or glycol (yuck)
In an emergency, use water—putting vegetable oil in a system designed for DOT is disastrous.
Hydraulic disc brakes and breakdown
Hi there,
Just a little tip.
I’m chiming in years later—sorry about that—I just read this today. But still a seasoned traveler!
I left without a bleed kit and had a real hassle.
Headed to a pharmacy, got 2 big syringes, needles, and catheters. Then used organic olive oil instead of some impossible-to-find liquid. I spilled some on the ground—no big deal, unlike the original oil, it doesn’t pollute.
Result: bleed went fine, braking was perfect (works in summer, but of course, if it’s really cold, don’t use olive oil). FYI, the boiling point is around 300°C—just as good as the best mineral oils (which are polluting). Min temp: -3°C.
Just a little tip.
I’m chiming in years later—sorry about that—I just read this today. But still a seasoned traveler!
I left without a bleed kit and had a real hassle.
Headed to a pharmacy, got 2 big syringes, needles, and catheters. Then used organic olive oil instead of some impossible-to-find liquid. I spilled some on the ground—no big deal, unlike the original oil, it doesn’t pollute.
Result: bleed went fine, braking was perfect (works in summer, but of course, if it’s really cold, don’t use olive oil). FYI, the boiling point is around 300°C—just as good as the best mineral oils (which are polluting). Min temp: -3°C.