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Discussion Starter · #1 ·
Im getting ready to change the clutch and brake fluid on the bike. I can only find DOT 4 synthetic at the auto stores. No one has regular brake fluid. Is the synthetic ok to use or is it a no no?
 

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Dang... I thought it was all "synthetic".
 

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The regular stuff is "synthetic" too, in as much as glycol is man made product/by-product. Those labled 3-4 or 4 are OK, like Red noted, Valvoline is popular; but it probably all comes out of the same synthetic horse.

prs
 

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It is the DOT 5 which is silicon based that you want to stay away from. Synthetic fluids are fine as long as they are labeled DOT 3, DOT 4, and/or DOT 5.1. DOT 5.1 (Five point one) is the Polyethylene-glycol based version of the silicon based DOT 5.

Stick with 3, 4, or 5.1 and you'll be fine.

Im getting ready to change the clutch and brake fluid on the bike. I can only find DOT 4 synthetic at the auto stores. No one has regular brake fluid. Is the synthetic ok to use or is it a no no?
 

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5,259 Posts
The regular stuff is "synthetic" too, in as much as glycol is man made product/by-product. Those labled 3-4 or 4 are OK, like Red noted, Valvoline is popular; but it probably all comes out of the same synthetic horse.

prs
I think that horses name is "Glycol". :lol:
 
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