GM Hydraulic Clutch Fluid - ZR-1 Net Registry Forums

secondchance · 10-09-2009

Does anyone know if this fluid is hydroscopic?
On the bottle it says 1#12345347.

tomtom72 · 10-11-2009

Yun, I think the GM stuff does absorb water? ...I am not 100% positive though.

Bill has since found a suitable alternative fluid. It's posted up on his site. A while back his opinion was to stick with the GM clutch fluid to not have the squeaking. I don't know if there were any other reasons he said to stay with the GM stuff.

Tom

gbrtng · 10-11-2009

Quote:

Originally Posted by secondchance

Does anyone know if this fluid is hydroscopic?
On the bottle it says 1#12345347.

Yes, if it's DOT 3 or 4. The FSM allows DOT 3 as a substitute. I've been using Ford HP DOT 3 for many years with no squeaking or any other problems. My clutch system has always leaked very slowly (never getting worse) and the Ford stuff is fine.

Why do I even have the stuff in the shop? Well, I have some left over from track events years ago and I hate to waste anything.

secondchance · 10-11-2009

Thanks for the input.
I guess better to throw away than taking chance.

10-11-2009	#2
tomtom72 Join Date: Dec 2004 Location: Jacksonville, FL USA Posts: 4,645	Re: GM Hydraulic Clutch Fluid Yun, I think the GM stuff does absorb water? ...I am not 100% positive though. Bill has since found a suitable alternative fluid. It's posted up on his site. A while back his opinion was to stick with the GM clutch fluid to not have the squeaking. I don't know if there were any other reasons he said to stay with the GM stuff. Tom __________________ 1990 ZR-1, Black/grey, #2233, stock. ZR-1 Net Reg Founding Member #316 & NCM member

10-11-2009	#4
secondchance Join Date: Aug 2006 Location: McLean, VA Posts: 3,723	Re: GM Hydraulic Clutch Fluid Thanks for the input. I guess better to throw away than taking chance.

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10-09-2009	#1
secondchance Join Date: Aug 2006 Location: McLean, VA Posts: 3,723	GM Hydraulic Clutch Fluid Does anyone know if this fluid is hydroscopic? On the bottle it says 1#12345347.