View Full Version : Changing clutch fluid


Civardi
04-09-08, 04:50 PM
Since I am doing the diff this weekend and just got a new radiator I figured why not do the whole car. I saved this link from before I had my V.

http://www.rangeracceleration.com/Clutch_Care.html

Has anyone tried this? Fluid in mine is really dark. So if I wanted to switch from the DOT3 to the Royal Purple Synchromax does it need to be flushed or will this method work?

benelliwang
04-09-08, 09:53 PM
I've bled my C5 clutch 3 times over the years (same location on c5 & c6), and it is not as hard as that links Alternative 3 says.
1. Jack car up.
2. Drink beer.
3. Call wife.
4. Crawl under car with one wrench.
5. Open the valve with wrench.
6. Tell wife to push clutch like she wants to kick me.
7. Close valve.
8. Repeat 5 to 6 & refill reservoir until the fluid is done.
9. Drink more beer.
10. Wipe clean.
11. Lower car.
12. Buy wife jewelry for help me with car.

PISNUOFF
04-10-08, 02:36 AM
I tried that 'just keep refilling and pumping' method and it did not work for me. It really only takes 5 minutes to fully bleed the system. Ben has it right, but I used a rubber hose and didn't have to wipe anything clean. Also, no wife and I don't buy the G/F anything for helping. She just thinks it's nice to spend time with me.:devilheh::devilheh:

ewill3rd
04-10-08, 06:37 AM
It will have to be bled, it sucks... but no real way around it.

Bueller
04-10-08, 07:45 AM
If you use the remove some, add some, remove, add and so on...why won't this work? I can understand if you remove too much and bleed in some air. Please help me understand. Thanks

ewill3rd
04-10-08, 08:36 AM
Adding fluid on top and pumping the clutch will just cause the fluid to move back and forth, it will never put the fluid on top to the bottom.
Imagine a long pipe with fluid in it, putting some on one end will hardly replace the fluid at the other.
The bleeder screw is at the bottom end, the only way to effectively remove the fluid is to open the bleeder and force the fluid through from the top by flushing it out.
There are no magical forces that rotate the fluid through a single straight pipe, it just sits there until the molecules on top press them down.
When the force is released they just move back up a little.

trukk
04-10-08, 11:22 AM
Adding fluid on top and pumping the clutch will just cause the fluid to move back and forth, it will never put the fluid on top to the bottom.
Imagine a long pipe with fluid in it, putting some on one end will hardly replace the fluid at the other.
The bleeder screw is at the bottom end, the only way to effectively remove the fluid is to open the bleeder and force the fluid through from the top by flushing it out.
There are no magical forces that rotate the fluid through a single straight pipe, it just sits there until the molecules on top press them down.
When the force is released they just move back up a little.
WOW is Bill talking about fluid dynamics and molecules :D

All you guys need to do what I do....Have Bill flush and change the clutch fluid the next time you are at Lindsay Cadillac. So much easier to stroke a check. Bleeding the clutch is a PITA.

-Chris

Civardi
04-10-08, 01:27 PM
All you guys need to do what I do....Have Bill flush and change the clutch fluid the next time you are at Lindsay Cadillac. So much easier to stroke a check. Bleeding the clutch is a PITA.

-Chris

I am on the west coast or I would be there. :crybaby: How much of a check will I be writing to have this done?

lollygagger8
04-10-08, 01:49 PM
ewill's write up:
http://www.cadillacfaq.com/faq/answers/clutchbleed.html

just one question: where's the bleeder valve, any pics?

lilred
04-10-08, 02:00 PM
Yes inquiring minds want to know. I need to do this as well. Already have Amsoil DOT 4 brake fluid on order.

benelliwang
04-10-08, 02:18 PM
If you are truely lazy, install one of these and you can bleed the clutch from the engine bay:
http://www.thelapd.com/index.php?main_page=product_info&products_id=194

This is great for track day people who likes to bleed all the fluids before the event.

lollygagger8
04-10-08, 02:46 PM
I'm cheap and am not going to change fluid every other day.... where's the bleeder?

trukk
04-10-08, 02:48 PM
If you are truely lazy, install one of these and you can bleed the clutch from the engine bay:
http://www.thelapd.com/index.php?main_page=product_info&products_id=194

This is great for track day people who likes to bleed all the fluids before the event.
Installing the remote bleeder is an absolute no brainer when you do a clutch swap, untill then, that's a lot of work to pull so much appart just to install it.

-Chris

benelliwang
04-10-08, 03:59 PM
Installing the remote bleeder is an absolute no brainer when you do a clutch swap, untill then, that's a lot of work to pull so much appart just to install it.

-Chris

Yeap no brainer.

It can be easily done in corvettes though, we just pop the mid pipes and bottom cover and it is there. I can get there in 30 minutes including beer drinking. I guess it not the same with a CTS-v?

mbiker97_old
04-10-08, 04:30 PM
The bleeder is on the driver side of the trans almost touching the body tunnel at the top. It's in a awful spot. Did the same steps as listed above, but made my friend pump the clutch for me. I may have to install one of those remote bleeders since the system seems to get contaminated really quickly.

ewill3rd
04-10-08, 04:43 PM
I have been using the GM stuff and it gets pretty gummy, can be real bad for drivers like Trukk.
It also seems to disappear... not sure what that is about. I haven't seen one leaking yet.

If the car is in for other service I'll usually do it for about 50 bucks or so. It isn't a big deal once you figure out how to work it.
Some places might charge more depending on how many they have done and how much they don't like V's.

benelliwang
04-10-08, 05:14 PM
The bleeder is on the driver side of the trans almost touching the body tunnel at the top. It's in a awful spot. Did the same steps as listed above, but made my friend pump the clutch for me. I may have to install one of those remote bleeders since the system seems to get contaminated really quickly.

Sounds like it is no harder to reach then a C5, good deal.

Civardi
04-10-08, 05:28 PM
I have been using the GM stuff and it gets pretty gummy, can be real bad for drivers like Trukk.
It also seems to disappear... not sure what that is about. I haven't seen one leaking yet.

If the car is in for other service I'll usually do it for about 50 bucks or so. It isn't a big deal once you figure out how to work it.
Some places might charge more depending on how many they have done and how much they don't like V's.

HMmm so find a shop, get a firm price and make them deal with it. I like that idea. I got a price of $170 to change the oil, trans fluid, and diff. Thats with me having the RP and AMSOIL.

Jayrcr3
04-10-08, 07:57 PM
I did a hard 2-3 shift the other day and thought I was imagining things. My clutch pedal stuck to the floor for about a 1/4 second before it came up. Evidently I wasn't imagining it. Now I know how to fix it. Thanks guys.

trukk
04-11-08, 08:57 AM
I did a hard 2-3 shift the other day and thought I was imagining things. My clutch pedal stuck to the floor for about a 1/4 second before it came up. Evidently I wasn't imagining it. Now I know how to fix it. Thanks guys.


FYI, there is a TSB for that issue. Check the FAQ.

-Chris

atdeneve
04-11-08, 09:20 AM
Getting into 1st and R was not a problem about 1,000 miles ago (getting into second was actually harder than getting into 1st). Now, it's a real bitch. Lo and behold, my clutch fluid was below the min, at about the F A G (no, I'm not prejudice). Didn't make sense, being that all the fluids were supposed to have been full about 1,000 miles ago. The clutch fluid reservoir is pathetically meek, but still, couldn't believe that the fluid would have gone down that fast. Anyways, suctioned out the old black fluid and wiped away the congealed gelatinous stuff. Topped it off (I use RBF 600) and it still isn't good as it was. Clutch engagement is more abrupt. Less control. Not as linear. All this leads to more clunking. Next step is the flush.

The rate that the clutch fluid in our Vs gets so dirty/black and disappears is astounding. It can only worsen the shifting problems. Getting into gear will only be that much more difficult. Synchros will wear out. Shifting gets worse and worse. It's like you have to do a full flush at least once an oil change. Such a high maintenance bitch, she is. Eh. Yagottado, whatchagottado.

C66 Racing
04-13-08, 03:10 PM
Using my Z06 for track day use required frequent clutch bleeds. I got tired of having to drop the center section of the exhaust, remove the tunnel plate (which has something like 36 bolts holding it in place) and finally bought and installed an LAPD clutch bleeder extender. What a time saver. For those tracking the car and needing frequent clutch bleeds, I would install an extender line at the first convenient opportunity.

As a caution, on the Corvette, routing this extender line up to by the clutch reservoir requires routing it very near the fuel line. On a buddy of mine's Corvette, the aeroquip line of the clutch bleeder extender wore through the fuel line and caused a fire. I had installed my line in rubber sheath so I didn't have the same problem - and I recommend anyone installing this line consider doing the same. :cheers: