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#2421915 - 10/31/11 10:56 PM Synthetic Brake fluid or normal brake fluid????
forjonny Offline


Registered: 10/31/11
Posts: 3
Loc: Big Bear Lake, Ca
I just got me a 2000 Chrysler Voyager van. I see that the brake fluid is low. I looked on my shelf and I have some Prestone Synthetic Brake Fluid Dot 3. I don't know anything about synthetic or what I have in the resevoir now. Some said that all brake fluids are synthetic but the Napa guys said that some are synthetic and some are not. NOTE: I AM NOT TALKING ABOUT DOT 5 AND DON'T WANT TO KNOW ANYTHING ABOUT DOT 5.
So do I take a chance and pour any Dot 3 or Dot 4 into my reservoir whether it says synthetic or not? NOTE AGAIN: No one knows the truth about this subject. I spent two hours researching this on the Internet and got various answers.

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#2421923 - 10/31/11 11:07 PM Re: Synthetic Brake fluid or normal brake fluid???? [Re: forjonny]
beast3300 Offline


Registered: 12/24/09
Posts: 3124
Loc: Ohio
All brake fluid is synthetic.
_________________________
'03 Regal GS L67 3.29 GR:, PUP 5w30/TG3980, Filtermag

'99 Grand Prix L36: QS Defy 5w30/TG3387A, Filtermag


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#2421924 - 10/31/11 11:07 PM Re: Synthetic Brake fluid or normal brake fluid???? [Re: forjonny]
zyxelenator Offline


Registered: 01/24/11
Posts: 1340
Loc: Louisville,KY
I've been adding whatever brake fluid on previous cars and it was fine. I mean recommended to that car,DOT 3 or 4. They should be mixable same as dino and synthetic oils. Correct me if I'm wrong.
_________________________
99 Camry V6, 5 speed M/T
148k miles.Current fill:5w-30 G-oil,OVERSIZE P1, some Kreen and Ceratec added.
Lubro Moly 75w90 synthetic hypoid oil,with Moly

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#2421928 - 10/31/11 11:11 PM Re: Synthetic Brake fluid or normal brake fluid???? [Re: beast3300]
zyxelenator Offline


Registered: 01/24/11
Posts: 1340
Loc: Louisville,KY
Originally Posted By: beast3300
All brake fluid is synthetic.
That what I always thought, you can't find brake fluid present in nature. Oils-- sure.Well, maybe there is some brake fluid present in some people brains laugh
_________________________
99 Camry V6, 5 speed M/T
148k miles.Current fill:5w-30 G-oil,OVERSIZE P1, some Kreen and Ceratec added.
Lubro Moly 75w90 synthetic hypoid oil,with Moly

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#2421988 - 11/01/11 01:55 AM Re: Synthetic Brake fluid or normal brake fluid???? [Re: forjonny]
mongo161 Offline


Registered: 07/11/10
Posts: 3569
Loc: Coney Island, NY
I had Advance Auto Synthetic brake fluid in my reservoir and replaced 12 ounces of that synthetic with 12 ounces of Pennzoil, HD Brake Fluid, that I picked up at Big Lots for $1.80.

I picked up the brake fluid when the QSUD was on sale for $4 a quart.

The Pennzoil does not state that it is synthetic anywhere on the container. So I used a Turkey Baster and removed 12 ounces of the old AA synthetic brake fluid from the reservoir and replaced it with the fresh Pennzoil HD, Dot 3.

Brakes work fine and I notice nothing different except clean fluid in the reservoir. I do this a couple of time a year and then have the brake system bled every 3 years. IMO....New fluid is better than old fluid in the system.

Big Lots also had Accel, Brake Fluid on the Shelf, distributed by Warren out of Nebraska and that did not indicate that it was synthetic.

IMO....go to BL and pick up a 12 ounce container then make a trip to Dollar Tree and pick up a few Turkey Basters for $1 each and just exchange the fluid a couple of times a year.

IMO...a brake fluid exchange via Turkey Baster is better than driving around with weak fluid especially after a hot summer and a cold winter coming up.
_________________________
I get by with a little help from my friends....listen with your eyes....it's the ONLY way to believe what you hear...

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#2421996 - 11/01/11 04:12 AM Re: Synthetic Brake fluid or normal brake fluid???? [Re: forjonny]
Boomer Online   content


Registered: 09/19/08
Posts: 1798
Loc: Pennsylvania
All brake fluid is a variant of polyethylene glcol. Since it does not occur in nature, all brake fluid is synthetic. They put this on the container to get you to buy that brand.
_________________________
2003 Saturn L 300 128,100 miles
2013 VW Passat TDI SE, 31,280 miles
2014 VW Jetta TDI SportWagen 17,010 miles

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#2422058 - 11/01/11 07:31 AM Re: Synthetic Brake fluid or normal brake fluid???? [Re: Boomer]
Trav Offline


Registered: 11/20/06
Posts: 13815
Loc: MA, Mittelfranken.de
Quote:
All brake fluid is a variant of polyethylene glcol

DOT 3, 4 and 5.1 are polyethylene glycol based. DOT 5 is silicone-based and does not mix with the polyethylene glycol based fluids.


Edited by Trav (11/01/11 07:31 AM)
_________________________
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#2422071 - 11/01/11 07:53 AM Re: Synthetic Brake fluid or normal brake fluid???? [Re: beast3300]
Rhymingmechanic Online   content


Registered: 08/13/04
Posts: 1012
Loc: VA
Originally Posted By: beast3300
All brake fluid is synthetic.


"Synthetic" appeared on the Prestone bottles a few years ago, obviously as a marketing ploy. (Sort of like "Fat Free" on a bottle of water?)

If there was anything special about the "synthetic" variety, we would be seeing regular, semi-synthetic, and synthetic brake fluids at different price points.

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#2422265 - 11/01/11 11:56 AM Re: Synthetic Brake fluid or normal brake fluid???? [Re: forjonny]
forjonny Offline


Registered: 10/31/11
Posts: 3
Loc: Big Bear Lake, Ca
I asked the guys at Napa Auto Parts if there is synthetic and non-syn and they do not know. They claim that there is a difference though. I guess they are just there to sell product and not to know product.

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#2422276 - 11/01/11 12:14 PM Re: Synthetic Brake fluid or normal brake fluid???? [Re: Trav]
Torino Offline


Registered: 12/01/04
Posts: 725
Loc: Henderson, Nevada
Originally Posted By: Trav
Quote:
All brake fluid is a variant of polyethylene glcol

DOT 3, 4 and 5.1 are polyethylene glycol based. DOT 5 is silicone-based and does not mix with the polyethylene glycol based fluids.
+1 John--Las Vegas

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#2423212 - 11/02/11 01:19 PM Re: Synthetic Brake fluid or normal brake fluid???? [Re: forjonny]
Ken2 Offline


Registered: 12/02/02
Posts: 6358
Loc: Washington St.
Originally Posted By: forjonny
I asked the guys at Napa Auto Parts if there is synthetic and non-syn and they do not know. They claim that there is a difference though. I guess they are just there to sell product and not to know product.
I bought a bottle of DOT4 brake fluid for my motorcycle at the local NAPA store. Good guys; I've known them a long time. The NAPA brake fluid was labeled as synthetic and the clerk asked me if I was sure that I wanted the synthetic product. I told him that they were all synthetic, and he rang me up without another word. These guys aren't trained and just follow the label, even if the label is mainly hype.

Except for a few tractors and other heavy equipment that use hydraulic oil as brake fluid, what IS non-synthetic brake fluid----there isn't any.
_________________________
Every gun that is made, every warship launched..a theft from those who hunger and are not fed, those who are cold and not clothed.
Gen. Eisenhower


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#2423534 - 11/02/11 07:06 PM Re: Synthetic Brake fluid or normal brake fluid???? [Re: forjonny]
forjonny Offline


Registered: 10/31/11
Posts: 3
Loc: Big Bear Lake, Ca
So great information. I topped it off with my new Napa stuff and all is good, thanks.

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