[olblue75]

So the Brembo HTC 64T fluid is a half liter bottle so it’s almost as much as the Castro’s SRF.

[thescreensavers]

Lots of Porsche guys all use Endless year round for their track toys.As it comes as factory fill in all their factory-built race cars.

I have used Brembo HTC 64T without issue, but I do flush my brakes before every track day (1 to 2 a year).

I do not use SRF as the two fluids I mentioned supposedly have better pedal feel. FWIW At 12hrs of Sebring most teams were using SRF.

So at the end of the day any of these fluids will be great!

[TheRealJA105]

Originally Posted by 20Bluezl1

Ok so looks like I'm going with the SRF. Now I will buy two 1L bottles to be safe. Also looking for the motive power bleeder but I see mixed reviews. Some say they leak with etier the metal or plastic cap. What should I get?

Good choice I buy 2 bottles for a full flush as well. I have Motive with the plastic cap and it has started to leak after a few years, but still works fine for bleeding because I don't put fluid in the Motive, I just make sure I keep the master filled. When you go to refill the master unscrew the Motive tank connection to break the seal, don't just remove the master cap until you have no pressure.

Originally Posted by rotis

I got the one with the plastic cap, it works great and doesn't leak. I used the thin gasket and lubricated it with a tiny bit of brake fluid. Just be 100% sure it's not leaking before you pressurize it with brake fluid.

Don't put fluid in the Motive.

Originally Posted by olblue75

So the Brembo HTC 64T fluid is a half liter bottle so it’s almost as much as the Castro’s SRF.

Correct

[20Bluezl1]

Ok so if I got this correct use two bottles of SRF and the motive bleeder.

The bleeder your pretty much using it as a pressure tank to push fluid in the reservoir.

What is the Sequence to bleed the brakes on the ZL1?

[cdb95z28]

Originally Posted by 20Bluezl1

Ok so if I got this correct use two bottles of SRF and the motive bleeder.

The bleeder your pretty much using it as a pressure tank to push fluid in the reservoir.

What is the Sequence to bleed the brakes on the ZL1?

RR
LF
LR
RF

[MatthewAMEL]

Originally Posted by cdb95z28

RR
LF
LR
RF

It's a common error in these cars.


You actually want to bleed from the ABS block which is on the Pax side.


So the order is:


RR, LF, LR, RF. <corrected since I fat fingered the original.


The brake hardlines run from the ABS block to the calipers.

[cdb95z28]

The service manual calls out the order I posted

[MatthewAMEL]

Originally Posted by 20Bluezl1

Ok so if I got this correct use two bottles of SRF and the motive bleeder.

The bleeder your pretty much using it as a pressure tank to push fluid in the reservoir.

What is the Sequence to bleed the brakes on the ZL1?

I used a Motive for a few years until a friend turned me on to the MityVac.


It's more money than the Motive, but it works so much better and is absolutely invaluable for Fluid changes.


https://www.amazon.com/Mityvac-7201-...s%2C179&sr=1-1

[MatthewAMEL]

Originally Posted by cdb95z28

The service manual calls out the order I posted

Actually the service manual says:


RR, LF, LR, RF


Fill the brake master cylinder reservoir with GM approved brake fluid from a clean, sealed
brake fluid container. Ensure that the brake master cylinder reservoir remains at least half-full
during this bleeding procedure. Add fluid as needed to maintain the proper level.
Clean the outside of the reservoir on and around the reservoir cap prior to removing the cap
4.
and diaphragm.
Install a proper box-end wrench onto the RIGHT REAR wheel hydraulic circuit, inboard (fixed
caliper), bleeder valve.
5.
Install a transparent hose 6. over the end of the bleeder valve.
Submerge the open end of the transparent hose into a transparent container partially filled with
GM approved brake fluid from a clean, sealed brake fluid container.
7.
Have an assistant slowly depress the brake pedal fully and maintain steady pressure on the
pedal.
8.
9. Loosen the bleeder valve to purge air from the wheel hydraulic circuit.
10. Tighten the bleeder valve, then have the assistant slowly release the brake pedal.
Wait 15 seconds, then repeat steps 8-10 until all air is purged from the same wheel hydraulic
circuit.
11.
12. For fixed caliper models, repeat steps 5-11 for the outboard bleeder valve.
With the right rear wheel hydraulic circuit bleeder valve, or valves (fixed caliper), tightened
securely - after all air has been purged from the right rear hydraulic circuit - install a proper
box-end wrench onto the LEFT FRONT wheel hydraulic circuit, inner (fixed caliper), bleeder
valve.
13.
14. Install a transparent hose over the end of the bleeder valve, then repeat steps 7-11.
15. For fixed caliper models, repeat steps 5-11 for the outboard bleeder valve.
With the left front wheel hydraulic circuit bleeder valve, or valves (fixed caliper), tightened
securely, after all air has been purged from the left front hydraulic circuit, install a proper
box-end wrench onto the LEFT REAR wheel hydraulic circuit, inner (fixed caliper), bleeder
valve.
16.
17. Install a transparent hose over the end of the bleeder valve, then repeat steps 7-11.
18. For fixed caliper models, repeat steps 5-11 for the outboard bleeder valve.
With the left rear wheel hydraulic circuit bleeder valve, or valves (fixed caliper), tightened
securely, after all air has been purged from the left rear hydraulic circuit, install a proper
box-end wrench onto the RIGHT FRONT wheel hydraulic circuit, inner (fixed caliper), bleeder
valve.
19.
20. Install a transparent hose over the end of the bleeder valve, then repeat steps 7-11.
21. For fixed caliper models, repeat steps 5-11 for the outboard bleeder valve.
After completing the final wheel hydraulic circuit bleeding procedure, ensure that each of the 4
wheel hydraulic circuit bleeder valves, or 8 bleeder valves (fixed caliper), are properly
tightened.
22.
Fill the brake master cylinder reservoir to the maximum-fill level with GM approved brake fluid
from a clean, sealed brake fluid container.
23.
24. Slowly depress and release the brake pedal. Observe the feel of the brake pedal.

[cdb95z28]

Originally Posted by MatthewAMEL

Actually the service manual says:


RR, LF, LR, RF


Fill the brake master cylinder reservoir with GM approved brake fluid from a clean, sealed
brake fluid container. Ensure that the brake master cylinder reservoir remains at least half-full
during this bleeding procedure. Add fluid as needed to maintain the proper level.
Clean the outside of the reservoir on and around the reservoir cap prior to removing the cap
4.
and diaphragm.
Install a proper box-end wrench onto the RIGHT REAR wheel hydraulic circuit, inboard (fixed
caliper), bleeder valve.
5.
Install a transparent hose 6. over the end of the bleeder valve.
Submerge the open end of the transparent hose into a transparent container partially filled with
GM approved brake fluid from a clean, sealed brake fluid container.
7.
Have an assistant slowly depress the brake pedal fully and maintain steady pressure on the
pedal.
8.
9. Loosen the bleeder valve to purge air from the wheel hydraulic circuit.
10. Tighten the bleeder valve, then have the assistant slowly release the brake pedal.
Wait 15 seconds, then repeat steps 8-10 until all air is purged from the same wheel hydraulic
circuit.
11.
12. For fixed caliper models, repeat steps 5-11 for the outboard bleeder valve.
With the right rear wheel hydraulic circuit bleeder valve, or valves (fixed caliper), tightened
securely - after all air has been purged from the right rear hydraulic circuit - install a proper
box-end wrench onto the LEFT FRONT wheel hydraulic circuit, inner (fixed caliper), bleeder
valve.
13.
14. Install a transparent hose over the end of the bleeder valve, then repeat steps 7-11.
15. For fixed caliper models, repeat steps 5-11 for the outboard bleeder valve.
With the left front wheel hydraulic circuit bleeder valve, or valves (fixed caliper), tightened
securely, after all air has been purged from the left front hydraulic circuit, install a proper
box-end wrench onto the LEFT REAR wheel hydraulic circuit, inner (fixed caliper), bleeder
valve.
16.
17. Install a transparent hose over the end of the bleeder valve, then repeat steps 7-11.
18. For fixed caliper models, repeat steps 5-11 for the outboard bleeder valve.
With the left rear wheel hydraulic circuit bleeder valve, or valves (fixed caliper), tightened
securely, after all air has been purged from the left rear hydraulic circuit, install a proper
box-end wrench onto the RIGHT FRONT wheel hydraulic circuit, inner (fixed caliper), bleeder
valve.
19.
20. Install a transparent hose over the end of the bleeder valve, then repeat steps 7-11.
21. For fixed caliper models, repeat steps 5-11 for the outboard bleeder valve.
After completing the final wheel hydraulic circuit bleeding procedure, ensure that each of the 4
wheel hydraulic circuit bleeder valves, or 8 bleeder valves (fixed caliper), are properly
tightened.
22.
Fill the brake master cylinder reservoir to the maximum-fill level with GM approved brake fluid
from a clean, sealed brake fluid container.
23.
24. Slowly depress and release the brake pedal. Observe the feel of the brake pedal.

Jeezus, That is what I said in my post! RR/LF/LR/RF

In your post #20 you have it wrong

[20Bluezl1]

Ok so now we have some confusion and conflicts on the sequence that yiu are supposed to bleed the brakes. The only thing I believe are in common is do the inbound then outbound.

How can we get this straight 😫.

[20Bluezl1]

Originally Posted by cdb95z28

Jeezus, That is what I said in my post! RR/LF/LR/RF

In your post #20 you have it wrong

That is what I see too but again I'm confused

[cdb95z28]

Originally Posted by 20Bluezl1

Ok so now we have some confusion and conflicts on the sequence that yiu are supposed to bleed the brakes. The only thing I believe are in common is do the inbound then outbound.

How can we get this straight 😫.

I had it straight. I have confirmed with other Gen6 owners who have the owners manual that it is RR/LF/LR/RF

My Gen5 is also this sequence as it is with other GM vehicles.

[20Bluezl1]

Originally Posted by cdb95z28

I had it straight. I have confirmed with other Gen6 owners who have the owners manual that it is RR/LF/LR/RF

My Gen5 is also this sequence as it is with other GM vehicles.

Yea buddy +1