Reply to "Brake fluid?"

robborrusoMember

Hey 200,
Dot 3 and 4 are both actually "Old school" (polyethylene glycol-based). Dot 4 has a higher boiling point. I would not be concerned flushing my system with either...for fear the other was in it before flushing. Dot 5 on the other hand....totally different story.... 5 is synthetic.

I swapped to 5 once, but didn't like the pedal feel on the track. I ended up blowing the system out with air, then pushed a couple of cans of brake clean through the system..followed by air pressure blow out to dry the brake clean in order to switch back.

If you dip your finger into it, you can feel a viscosity difference between them. I'll go out on a limb and say the likelihood of it being Dot5 is probably pretty low.

My $0.02....

BTW...nice tidy trunk. I likey....

1/28/164:32 PM

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