imo
a good flush would be 2-3x the line volume per corner.... no back flushing

 

And how much brake fluid might that be? I'm trying to understand how much I need to buy, and they unfortunately do not measure fluid by units of line volume.

 

bleed till it runs clear. look at the volume and double or 3x that. follow the bleeding in the manual for your rig on which corner to start ect, ect and end

 

I can't see you needing more than a quart (DOT 4). But, buy two just in case.

 

They say a quart is what you need for a car, so I guess it's better to get too much than not enough. Polaris brake fluid comes in 12 oz bottles, so sounds like 3 will get me fixed up.

And remember, once it is open it starts to draw moisture in the can and is not recommend to use. Use only a fresh opened can. One quart is a lot of fluid.

Fortunately, I've been told that since I was little. Not sure how I knew that but had no concept of how much I'll need

 

And remember, once it is open it starts to draw moisture in the can and is not recommend to use. Use only a fresh opened can. One quart is a lot of fluid.

 

A quart of fluid ran through starting at the furthest corner from the master cylinder (RR) and working your way to the closest corner (LF) until you see clear fluid at all 4 corners is plenty sufficient.

 

There is no reason to overpay for Polaris brake fluid, just FYI. Get a quart of Prestone or Valvoline at Autozone for 1/3 the price, just make sure it's DOT4.

 

@RWB713 beat me to the punch. Don't buy Polaris brand brake fluid. It's the same s*** you'll find on the Walmart (Autozone, O'Reillys, etc.) shelf.