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Old Jan 28, 2021 | 02:39 PM
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Default Clutch bleeding

Are you guys saving Super DOT 4 fluid for your next Ranger or Syringe clutch fluid job, or are you tossing it?

I know the stuff is hydroscopic so not good to use if it has been left open. I just did my second oil change and on car and figured a ranger method flush each change seems reasonable.
Plan to suck fluid from the line this time too.

Really wondering if you all just buy the smallest bottle of brake fluid possible, since most won't get used and you can't save it for next time.

Finally, what do you guys do with the left over and the old stuff?
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Old Jan 28, 2021 | 03:13 PM
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Originally Posted by Dennis Bernal
Are you guys saving Super DOT 4 fluid for your next Ranger or Syringe clutch fluid job, or are you tossing it?

I know the stuff is hydroscopic so not good to use if it has been left open. I just did my second oil change and on car and figured a ranger method flush each change seems reasonable.
Plan to suck fluid from the line this time too.

Really wondering if you all just buy the smallest bottle of brake fluid possible, since most won't get used and you can't save it for next time.

Finally, what do you guys do with the left over and the old stuff?
After I've opened a brake fluid container (DOT 3 or DOT4), I get rid of the left over brake fluid after a few weeks.

I only keep it around for a short time in case I need to top off the reservoir.

I am kind of OCD, I write the date opened on the container too.

I have a recycling center about 10 miles away where I take my used engine oil and other household waste that can't go out in the regular trash pick-up.
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Old Jan 28, 2021 | 03:47 PM
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Whatever you're comfortable with, but an opened can of DOT4 should last a year or two.
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Old Jan 28, 2021 | 03:52 PM
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What brand do you guys use?
Or is that not too critical? DOT 4 or SUPER DOT 4?
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Old Jan 28, 2021 | 04:01 PM
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I use GM Delco Super Dot 4. GM states there are added lubricants to the formula to lubricate certain parts better than off the shelf.. Besides I don't care about spending a few extra buck for the GM. that's what they recommend.
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Old Jan 28, 2021 | 04:05 PM
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Originally Posted by Dennis Bernal
What brand do you guys use?
Or is that not too critical? DOT 4 or SUPER DOT 4?
I used Pentosin Super DOT 4 when I did the Ranger Method last year. I used the Pentosin because several other CF members recommended it.

Although I've not used it, the GM fluid for clutch and brake systems is PN 19299570.

--KLG--

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Old Jan 28, 2021 | 04:07 PM
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I use Pentosin Super DOT4, but I'd think any quality brand would be fine.
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Old Jan 28, 2021 | 04:15 PM
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Originally Posted by John Harry
Whatever you're comfortable with, but an opened can of DOT4 should last a year or two.

I keep mine sealed in a container for next use up to a year.
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Old Jan 28, 2021 | 04:18 PM
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Extend shelf life of open brake fluid container by storing indoors where humidity is lower.
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Old Jan 28, 2021 | 04:45 PM
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FWIW: Owner's manual says replace fluid every three years....
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Old Jan 28, 2021 | 04:48 PM
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Pentosin DOT 4 LV user here.

I do the Ranger method at every other oil change.
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Old Jan 28, 2021 | 05:07 PM
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Originally Posted by JMII
Pentosin DOT 4 LV user here.

I do the Ranger method at every other oil change.
Just curious, do you see an advantage to use Pentosin DOT 4 LV as opposed to the Super DOT 4?

I know LV means low viscosity and it is supposed to have some advantages in ABS systems.

--KLG--
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Old Jan 29, 2021 | 04:27 PM
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I always use a fresh container of super dot 4, any remaining fluid I pour around the foundation of my house to kill termites. been doing that for 40 years, no termites in sight. it must be working.
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Old Jan 29, 2021 | 04:49 PM
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Originally Posted by KLG
I know LV means low viscosity and it is supposed to have some advantages in ABS systems.
That's what I've read too: https://www.corvetteforum.com/forums...post1595707609

Of course we are talking clutch here (not brakes) so I don't see any advantage to the LV stuff... its just what I used. I assume any DOT4 is likely fine for something as simple as your clutch. I've never had any clutch problems, even on track so I'd say its working as intended.
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Old Jan 29, 2021 | 11:08 PM
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Originally Posted by JMII
That's what I've read too: https://www.corvetteforum.com/forums...post1595707609

Of course we are talking clutch here (not brakes) so I don't see any advantage to the LV stuff... its just what I used. I assume any DOT4 is likely fine for something as simple as your clutch. I've never had any clutch problems, even on track so I'd say its working as intended.
Understood, thanks for the clarification!

--KLG--
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