Which DOT brake fluid to use in the hydraulic clutch system?
03-04-2003, 09:34 PM
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Which DOT brake fluid to use in the hydraulic clutch system? The SPEC sheet says to use only GM 5.1 or non-synthetic DOT brake fluid in the master cylinder; synthetic fluid has been known to cause fluid blow-by in the LS1 cars.
03-05-2003, 08:07 PM
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Re: Which DOT brake fluid to use in the hydraulic clutch system? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by LOnSLO:
<strong> Hey Teddy, what's up man. I used the DOT 4 in mine. You can get it at WalMart. I believe it has a higher heat rating than DOT 3. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Thanks Ryan, I went and got 5 bottles of Preston Dot 4 tonight at Walmart. I going to put the clutch in on Sunday.
Here's what I found about the different DOT rating.
DOT 2 DOT 3 DOT 4 DOT 5
Dry Boiling point 374 401 446 500
Wet boiling point --- 284 311 356
<small>[ March 05, 2003, 08:12 PM: Message edited by: Go Texas Tech ]</small>
<strong> Hey Teddy, what's up man. I used the DOT 4 in mine. You can get it at WalMart. I believe it has a higher heat rating than DOT 3. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Thanks Ryan, I went and got 5 bottles of Preston Dot 4 tonight at Walmart. I going to put the clutch in on Sunday.
Here's what I found about the different DOT rating.
DOT 2 DOT 3 DOT 4 DOT 5
Dry Boiling point 374 401 446 500
Wet boiling point --- 284 311 356
<small>[ March 05, 2003, 08:12 PM: Message edited by: Go Texas Tech ]</small>
03-05-2003, 09:52 PM
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Re: Which DOT brake fluid to use in the hydraulic clutch system? I've been experimenting with brake fluid for the past few years, and here's my experience...
With Valvoline Syntech DOT 4 brake fluid, it works great in brake systems that see track use and routine brake fluid changes.
However, using the Valvoline in the clutch systems tends to brake down some seals and lines because they are not as durable as the braking system. I'm anxious to try some of the Castrol LMA DOT 4 in the brake and clutch systems, especially the clutch systems. From what I understand, it is supposed to be more gentle on the seals and lines, as well as absorb less moisture.
Just my opinion.
-Brad
With Valvoline Syntech DOT 4 brake fluid, it works great in brake systems that see track use and routine brake fluid changes.
However, using the Valvoline in the clutch systems tends to brake down some seals and lines because they are not as durable as the braking system. I'm anxious to try some of the Castrol LMA DOT 4 in the brake and clutch systems, especially the clutch systems. From what I understand, it is supposed to be more gentle on the seals and lines, as well as absorb less moisture.
Just my opinion.
-Brad
03-05-2003, 10:29 PM
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Re: Which DOT brake fluid to use in the hydraulic clutch system? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by BRacing:
<strong> I've been experimenting with brake fluid for the past few years, and here's my experience...
With Valvoline Syntech DOT 4 brake fluid, it works great in brake systems that see track use and routine brake fluid changes.
However, using the Valvoline in the clutch systems tends to brake down some seals and lines because they are not as durable as the braking system. I'm anxious to try some of the Castrol LMA DOT 4 in the brake and clutch systems, especially the clutch systems. From what I understand, it is supposed to be more gentle on the seals and lines, as well as absorb less moisture.
Just my opinion.
-Brad </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I have been using the Valvoline Syntech DOT 4 brake fluid in my clutch system until now. <img border="0" alt="[bang head]" title="" src="graemlins/gr_banghead.gif" /> My new clutch system will be using just regular DOT 4.
Here's what else I found... Good DOT Brake Fluid info...
Fluid DRY WET
Castrol LMA DOT 3/4 446 311
Ford Heavy Duty DOT 3 550 290
ATE Super Blue Racing 536 392
ATE TYP 200 536 392
Motul Racing 600 585 421
Castrol SRF 590 518
Performance Friction 550 284
<strong> I've been experimenting with brake fluid for the past few years, and here's my experience...
With Valvoline Syntech DOT 4 brake fluid, it works great in brake systems that see track use and routine brake fluid changes.
However, using the Valvoline in the clutch systems tends to brake down some seals and lines because they are not as durable as the braking system. I'm anxious to try some of the Castrol LMA DOT 4 in the brake and clutch systems, especially the clutch systems. From what I understand, it is supposed to be more gentle on the seals and lines, as well as absorb less moisture.
Just my opinion.
-Brad </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I have been using the Valvoline Syntech DOT 4 brake fluid in my clutch system until now. <img border="0" alt="[bang head]" title="" src="graemlins/gr_banghead.gif" /> My new clutch system will be using just regular DOT 4.
Here's what else I found... Good DOT Brake Fluid info...
Fluid DRY WET
Castrol LMA DOT 3/4 446 311
Ford Heavy Duty DOT 3 550 290
ATE Super Blue Racing 536 392
ATE TYP 200 536 392
Motul Racing 600 585 421
Castrol SRF 590 518
Performance Friction 550 284
