Time for new brake fluid as i've never changed it and am close to 48k......whats a good cost to pay for this as i'm gonna start looking around for quotes.

 

Why not just wait till you need pads and possibly rotors and do it then?

Telcoman

 

Most car makers, Infiniti included, recommend a brake flush every three to four years. Mileage isn't really a determining factor. A lot of car owners can go six years or more on a set of pads.

 

Brake fluid flush I would say $100 with the fluid it’s really not that hard only takes 30 min specially if you don’t have the BBK.

 

I paid about $100 at a Nissan dealer using Nissan fluid.

 

Paid ~$20 for 2 32oz bottles of prestone dot 4. Had a motive power bleeder I bought 8 yrs ago. Jack stands, floor jack, tools to R&R wheels, etc.. Already on hand. It's a simple procedure and you know it's done thoroughly. Some shops will charge you the full amount, but just change out the fluid in the reservoir which is pointless. Took about 30-40 min of actual bleeding for all 4 calipers (on the sport models, each caliper has 2 bleeders). If you do most of your own maintenance and lack this tool, it's a worthy investment (https://www.motiveproducts.com/).

WARNING: Do not over tighten the bleeder screws.

 

Just to add to the ^ comment on the BBK since it has two bleeder valves first do the outside then the inside.

 

Outside because it's the longer path (slightly) than the inside?

 

Yes, because you will basically be taking out some air from the inside of the caliper. When i did mine, I noticed less air escaping from the inside that the outside. Their also might be some air in between the caliper channel, so it makes it easier and more efficient to get all the air out from the outside, and the remaining air from the inside that did not escape.

 

Also another tip that i learned after several brake flushes is that, when you open the bleeder valve, and have someone in the vehicle pressing the brakes, you will notice that the fluid comes out smoothly, and not much pressure is pushing the fluid out. So repeat the process until you see new brake fluid in the tube that is connected to the bleeder valve, and you will notice that when you open the bleeder valve the fluid is pushing out much quickly with a higher pressure, and that is when you know it has been done correctly without any air in the system.

 

Air escaping?? No air in mine. I do it every 2-3 years as preventative maintenance. If the system was opened for some reason (lines, calipers, other brake parts replaced) then there would be air present.

 

yes over time air gets built inside the brake fluid which is from moisture. That’s why your brakes feel like sponge until you flush them and some air comes out of the bleeder valve. You probably don’t drive your car hard or in different climates for it to cause this but anytime I bleed the brakes I always have a bit of air in the system.