Hydraulic Clutch Fluid - ZR-1 Net Registry Forums

jrd1990zr1 · 06-28-2011

Noticed my clutch master reservoir is down a little, figured I would top it off.

I just got back from a couple auto supplys, a NAPA and a GM dealer.

Auto supplys don't know what I should use, GM dealer says GM fluid (12345347) is discontinued.

Any idea what should be used to top off?

Also any way to test the fluid in the system before I potentially contaminate it?? Not sure what previous owner might have used???

Any advice is appreciated.

Thanks, John

LGAFF · 06-28-2011

DOT 3 or Dot 4 if I recall

ittlfly · 06-28-2011

Quote:

Originally Posted by LGAFF

DOT 3 or Dot 4 if I recall

I flush my clutch master cyl every year and refill with DOT 3. Appears to work just fine.

LGAFF · 06-28-2011

To be clear DOT 3 brake fluid

jrd1990zr1 · 06-28-2011

Thanks Guys!!

PhillipsLT5 · 06-28-2011

but why is it low?
leaking slave?

secondchance · 06-28-2011

Quote:

Originally Posted by LGAFF

To be clear DOT 3 brake fluid

When I got the hydraulic fluid specifically for the the clutch hydraulic from a Chevy dealer I was told the fluid was not hydroscopic-meaning non-brake fluid.
Are we condemned to a substitute?

LGAFF · 06-28-2011

Looks like summit has it, according to other sites its DOT3 with an addative; I have run DOT 3 with no issues

I think Summit has this in stock

Kevin · 06-28-2011

i've used dot 3 to top off before and the clutch started to chirp on me

rhipsher · 06-29-2011

Oh brother! Just get this stuff at Oreillys and be done with it.

06-28-2011	#1
jrd1990zr1 Join Date: Dec 2005 Location: Delanson, NY Posts: 916	Hydraulic Clutch Fluid Noticed my clutch master reservoir is down a little, figured I would top it off. I just got back from a couple auto supplys, a NAPA and a GM dealer. Auto supplys don't know what I should use, GM dealer says GM fluid (12345347) is discontinued. Any idea what should be used to top off? Also any way to test the fluid in the system before I potentially contaminate it?? Not sure what previous owner might have used??? Any advice is appreciated. Thanks, John __________________ 1968 convertible Lemans Blue, 1986 coupe Medium Blue NCRS Top Flight (sold), 1990 ZR1 #2529 Red NCRS Regional and National Top Flight (sold), 1990 ZR1 #2124 Charcoal Metallic NCRS Top Flight 2010 & 2018, 2003 Anniversary Red Convertible (sold)

06-28-2011	#2
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,194	Re: Hydraulic Clutch Fluid DOT 3 or Dot 4 if I recall __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359

06-28-2011	#4
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,194	Re: Hydraulic Clutch Fluid To be clear DOT 3 brake fluid __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359

06-28-2011	#5
jrd1990zr1 Join Date: Dec 2005 Location: Delanson, NY Posts: 916	Re: Hydraulic Clutch Fluid Thanks Guys!! __________________ 1968 convertible Lemans Blue, 1986 coupe Medium Blue NCRS Top Flight (sold), 1990 ZR1 #2529 Red NCRS Regional and National Top Flight (sold), 1990 ZR1 #2124 Charcoal Metallic NCRS Top Flight 2010 & 2018, 2003 Anniversary Red Convertible (sold)

06-28-2011	#6
PhillipsLT5 Join Date: Aug 2005 Location: Scottsdale, AZ Posts: 2,452	Re: Hydraulic Clutch Fluid but why is it low? leaking slave?

06-28-2011	#8
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,194	Re: Hydraulic Clutch Fluid Looks like summit has it, according to other sites its DOT3 with an addative; I have run DOT 3 with no issues I think Summit has this in stock __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359

06-28-2011	#9
Kevin Join Date: Jun 2005 Location: pittsburgh Posts: 4,632	Re: Hydraulic Clutch Fluid i've used dot 3 to top off before and the clutch started to chirp on me __________________ It's not the car, it's the people - Doug Johnson 90 r/r "KEYS ON" nick named "T.L.B"

06-29-2011	#10
rhipsher Join Date: Aug 2008 Location: Houston 90 Red ZR-1 Posts: 2,320	Re: Hydraulic Clutch Fluid Oh brother! Just get this stuff at Oreillys and be done with it.