Getting ready to bleed brakes. Do you shake the bottle of brake fluid?

[Jeep_Riot]

It’s a new bottle of Lucas DOT3, never opened and still sealed. Are there any pros and cons to shaking the bottle before pouring? Thanks.

 

[ripcord]

No shaking required. There's nothing to remix in brake fluid and all you'll end up doing is possibly making bubbles.

 

[berniedd]

I don't shake it. Even if new and unopened. In the unlikely event there's a bit of crud in there from the factory I want it to stay at the bottom of the bottle and not enter the system.

 

[Astro14]

No. No need to.

 

[K-Man]

If it needs shaking now, how would you shake it after it's installed in the brake system?

 

[97prizm]

It’s a new bottle of Lucas DOT3, never opened and still sealed. Are there any pros and cons to shaking the bottle before pouring? Thanks.

No shaking. Always start with the furthest brake line from the master cylinder ie right or left rear depending on which side the master cylinder reservoir is on.

 

[awguy]

Heck no. No shaking.

 

[rszappa1]

No shaking also may introduce small air bubbles....

 

[dogememe]

I’m sure it got shaken plenty on its journey from where it’s made to your driveway or garage.

Besides, like the other poster said, do you shake your car every morning to get the brakes ready? No, you don’t.

 

[Lubener]

It’s a new bottle of Lucas DOT3, never opened and still sealed. Are there any pros and cons to shaking the bottle before pouring? Thanks.

Shaking creates bubbles. Why would you possibly want to introduce that into the brake system? If you want to shake it , do it in advance before you takle the job.

 

[TiGeo]

No shaking. Always start with the furthest brake line from the master cylinder ie right or left rear depending on which side the master cylinder reservoir is on.

Not all modern cars are bled that way. VW for example...factory manual bleed order is LF/RF/LR/RR.

 

[TiGeo]

Shaking....not necessary but also won't have any negative impacts I can think of.

 

[CharBaby]

It’s good to hear that you’re going to bleed your brake system.

 

[John105]

Thought this was gonna be an April fools post. Where would that thought come from, soda or drinks? Seriously

 

[John105]

Shaking creates bubbles. Why would you possibly want to introduce that into the brake system? If you want to shake it , do it in advance before you takle the job.

The only thing I can think of is drawing an analogy to bottled or mixed drinks, a person wants to mix up what may have settled on the bottom. Other than that I can't even imagine where the thought came from. Only the OP can explain. If the OP said they're a bartender, I think that would explain

 

[PontiacHO]

It’s not like Pennzoil. There is no “additives” in the bottom.

 

[Donald]

So what method will you use? Buddy system or Speed Bleeders or pressure (Motive) or vacuum?

Spray each bleeder the night before with PB Blaster. And use a 6 pt wrench.

I installed Speed Bleeders to get SS bleeders. And then tried them and so easy I never used the Motive I bought.

 

[spasm3]

It’s a new bottle of Lucas DOT3,

A bottle of anything Lucas coming near my vehicle, makes me shake!!

 

[KYMISTWALKER]

A bottle of anything Lucas coming near my vehicle, makes me shake!!

You should wear a helmet. It’s rough out here.

 

[AutoMechanic]

I don’t shake it before pouring it in.