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  #1  
Old 08-21-2012, 11:51 PM
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Green brake fluid

I was looking at the fluid in my brake reservoir and noticed it has a greenish tint to it. Is this normal? What is it? I was going to bleed my brakes with regular fluid but this has stopped me. I just got the car in June, so all the fluid that's there was in there when I bought it.

Thanks,
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  #2  
Old 08-21-2012, 11:57 PM
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Originally Posted by VW1300 View Post
I was looking at the fluid in my brake reservoir and noticed it has a greenish tint to it. Is this normal?
Impossible to say if it's normal or not. Different colors are used for brake fluid; some is clear, some is blue, some is amber. When in doubt, flushing it cannot be a bad option. That way, you know exactly what you have and how long you have had it.
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  #3  
Old 08-22-2012, 12:33 AM
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The OP reads like I wrote it -- green brake fluid, yes! -- except I bought the '95 E300 in March, not June. Wonder what brand is green? Querty is right, I'll be flushing the fluid soon. My personal preference is for clear fluids as then you can tell when they're dirty, contaminated, or just "old."

Jeremy
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Last edited by Jeremy5848; 08-22-2012 at 10:52 AM. Reason: typo
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Old 08-22-2012, 07:05 AM
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Use the DOT type listed on the cap and you should be fine. You did not mention the type car but if has SBC (and you do not have SDS) you will need to disconnect the module prior to starting the job.
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  #5  
Old 08-22-2012, 10:33 AM
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Quote:
Originally Posted by Jeremy5848 View Post
The OP reads like I wrote it -- green brake fluid, yes! -- except I bought the '95 E300 in March, not June. Wonder what brand is green? Querty is right, I'll be flusying the fluid soon. My personal preference is for clear fluids as then you can tell when they're dirty, contaminated, or just "old."

Jeremy
PO probably went from ATE Blue to ATE Amber of the same DOT Type without doing a full flush. I do the brake fluid color change to tell when I've cycled a full flush of fluid through the system.
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Old 08-22-2012, 11:26 AM
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Quote:
Originally Posted by Jeremy5848 View Post
The OP reads like I wrote it -- green brake fluid, yes! -- except I bought the '95 E300 in March, not June. Wonder what brand is green? Querty is right, I'll be flushing the fluid soon. My personal preference is for clear fluids as then you can tell when they're dirty, contaminated, or just "old."

Jeremy
There is a green Castrol brake fluid, whoever bled the brakes in my 300e used this as well, mine was dark green though (no telling how old it was).
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  #7  
Old 08-22-2012, 12:45 PM
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Originally Posted by tbomachines View Post
There is a green Castrol brake fluid, whoever bled the brakes in my 300e used this as well, mine was dark green though (no telling how old it was).

Vehicles that use newer mineral-based brake fluid are green. I don't know if the latest MBs do or not.

DOT-type brake fluid is vegetable-oil based, except for DOT5, I believe.
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Old 08-22-2012, 12:53 PM
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Originally Posted by strelnik View Post
Vehicles that use newer mineral-based brake fluid are green. I don't know if the latest MBs do or not.

DOT-type brake fluid is vegetable-oil based, except for DOT5, I believe.
After searching I can't find what I was referring to (although I know its out there somewhere)...to the OP I'd just flush with new fluid and keep an eye on it.
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  #9  
Old 08-22-2012, 12:55 PM
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Here I was thinking we were going to have another argument about eco-friendly fluids.

Bottom line is I wouldn't trust it. Too many unknowns. If it were clear and clean, I would say you are probably OK. Just flush it out and replace it with MB and DOT spec fluid that is clear.
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  #10  
Old 08-22-2012, 01:01 PM
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Quote:
I do the brake fluid color change to tell when I've cycled a full flush of fluid through the system.
Good idea - thanks.
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  #11  
Old 08-22-2012, 01:10 PM
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Originally Posted by anghrist View Post
PO probably went from ATE Blue to ATE Amber of the same DOT Type without doing a full flush. I do the brake fluid color change to tell when I've cycled a full flush of fluid through the system.
I went from Blue to Amber not too long ago. My reservoir did this at first, but as I was/am having brake troubles I flushed again and it went away.
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  #12  
Old 08-22-2012, 02:09 PM
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Thanks to all who replied. Will flush when I get a chance. For now, fluid that came out of front wheel brake bleeder was light green but clean looking.
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  #13  
Old 08-22-2012, 03:41 PM
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Quote:
Originally Posted by VW1300 View Post
I was looking at the fluid in my brake reservoir and noticed it has a greenish tint to it. Is this normal? What is it? I was going to bleed my brakes with regular fluid but this has stopped me. I just got the car in June, so all the fluid that's there was in there when I bought it.

Thanks,
ignore the color. you want dot4 fluid. some is yellow, some is clear, some blue, some green. so long as it's dot4 grade, you're good.

fyi, like your owners manual says, brake fluid must be changed every 2 years. brake systems rot from the inside out. if you change your fluid, and it comes out looking dark, you already have damaged your system! that dark color is dissolved brake seals and rust! change it every 2 years and keep the system healthy and working like new.
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  #14  
Old 08-22-2012, 03:54 PM
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ATE Super Blue isn't legal in FL even though it is the same as TYP 200 ( amber )

www.800helpfla.com/Standards/Downloads/ApprovedLists.pdf
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  #15  
Old 08-22-2012, 04:00 PM
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Originally Posted by 97 SL320 View Post
ATE Super Blue isn't legal in FL even though it is the same as TYP 200 ( amber )

www.800helpfla.com/Standards/Downloads/ApprovedLists.pdf
What exactly does "legal in FL" mean? Note that your expired reference says "approved," not "legal."

It appears that the Florida Dept of Agriculture has jurisdiction over the sale of brake fluid, not the end use.

Last edited by qwerty; 08-22-2012 at 04:18 PM.
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