Recent Topics
Honda Pilot gas mileage
by G-MAN
Yesterday at 09:21 PM
Anyone else fed up with today's country music?
by 04SE
Yesterday at 08:52 PM
Best Oil Filter For A 2001 Toyota Avalon V6
by crazyoildude
Yesterday at 08:33 PM
Had Trav service my injectors.
by ls1mike
Yesterday at 08:14 PM
Video review/test - Noco Genius Boost
by 901Memphis
Yesterday at 07:24 PM
Interference diesel engine
by MDettling
Yesterday at 07:06 PM
Corolla 1/2 quart too much ATF?
by Corollaman
Yesterday at 06:42 PM
yr car has a security system. u lose all the keys,
by edwardh1
Yesterday at 06:15 PM
Attepted to steal van
by Scott_mi
Yesterday at 04:36 PM
is there an advantage to exercise spare tires?
by friendly_jacek
Yesterday at 04:06 PM
Type b grease for Sawzall
by Dan55
Yesterday at 03:56 PM
Charged By Dogs on Bicycle (Different Dogs)
by john_pifer
Yesterday at 03:50 PM
Newest Members
rvs, tortillasoup, Natedawg, exaltedfox, universalpapers5
51639 Registered Users
Who's Online
20 registered (3800Series, 901Memphis, 01_celica_gt, Apollo14, HappyLittlePony, 2 invisible), 617 Guests and 128 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
51639 Members
64 Forums
220947 Topics
3491855 Posts

Max Online: 2862 @ 07/07/14 03:10 PM
Donate to BITOG

Topic Options
#1092949 - 02/25/08 06:10 AM OK to mix synthetic brake fluid with regular?
Back40 Offline


Registered: 04/07/04
Posts: 193
Loc: South Carolina
Is it ok to top off reqular brake fluid with synthetic?

Top
#1092959 - 02/25/08 06:23 AM Re: OK to mix synthetic brake fluid with regular? [Re: Back40]
WishIhadatruck Offline


Registered: 05/09/06
Posts: 1276
Loc: Grand Rapids, MI
I believe all brake fluid is synthetic. Someone else can probably confirm that.
_________________________
1996 Buick Roadmaster Wagon
2014 Cruze Eco Manual
2003 2500 Suburban, 8.1L

Top
#1092960 - 02/25/08 06:28 AM Re: OK to mix synthetic brake fluid with regular? [Re: WishIhadatruck]
zrxkawboy Offline


Registered: 11/30/04
Posts: 1057
Loc: SD
 Originally Posted By: WishIhadatruck
I believe all brake fluid is synthetic. Someone else can probably confirm that.


true
_________________________
"Think of all the Ford owners who will someday want an automobile." John Dodge


Top
#1093021 - 02/25/08 08:31 AM Re: OK to mix synthetic brake fluid with regular? [Re: zrxkawboy]
VaderSS Offline


Registered: 06/10/02
Posts: 2077
Loc: Cordelia, CA
It is not Ok to mix DOT5 silicon brake fluid with any other fluid.

If you are talking about Valvoline Synpower though, it's a standard, though high quality, DOT4, all of which are synthetic, and fine to mix with most any DOT3/4 with.

That said, why are you "topping off" brake fluid? If there is a leak, you need to fix it, and if it is the disk brakes wearing, you should not top off because when you change the brakes, you'll overflow the reservoir.
_________________________
'88.5 Samurai
'96 Impala SS
'07 Focus ST
'07 BMW F650GS
'08 Gold Wing

Top
#1093070 - 02/25/08 09:39 AM Re: OK to mix synthetic brake fluid with regular? [Re: VaderSS]
Back40 Offline


Registered: 04/07/04
Posts: 193
Loc: South Carolina
Thanks for the feedback folks. 10-4 vader

Top
#1093238 - 02/25/08 02:55 PM Re: OK to mix synthetic brake fluid with regular? [Re: Back40]
mechtech2 Offline


Registered: 09/05/06
Posts: 19479
Loc: Chicago Area
It's good to top off low fluid. Sucking it out first is normal and good procedure when replacing pads.
But adding fresh fluid keeps air and thus moisture down in the system, and mixes fresh fluid with the old. It's a win win situation.
And all brake fluid is synthetic, like mentioned. Just watch out for the silicone based stuff.

Top