eBike Hydraulic disc brake servicing

DMax

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Jun 15, 2020
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I have an Aventon Pace 500 with about 750 miles on it. Front brake is essentially “gone” (brake handle goes all the way to the grip) and rear brake is close behind. Label on the reservoir say “Mineral Oil”. Is it really mineral oil that I can pick up at Kroger or is it a special mineral oil I need to purchase from a bike shop.
 

mlx john

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Sep 27, 2020
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Technically you can use any Mineral Oil since there is no governing body. Mineral Oil brake fluids are not governed by any standards or regulatory body, whereas DOT brake fluids are governed and have standards.

Your best bet would be to use mountain bike hydraulic brake fluid / mineral oil. You'll also need a bleed kit while you're at it. Something like this is an all-in-one solution - includes a bleed kit and mineral oil:

 
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