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[chrisgixer]

Jeez. The point is, you don't ordinarily need tech 2 to bleed the brakes. Christ almighty

I though 4 years was the service schedule for brake fluid. (No tech 2 required, unless there's a problem )

[dbug]

But how do you know they don't nitrogen purge the bottles when sealing them, Chris

Correct - nitrogen purge normal for hygroscopic products

[Marks DTM Calib]

But how do you know they don't nitrogen purge the bottles when sealing them, Chris

They do.

Plus even if it was air its a very small controlled amount and not 4 years of air circulated through the vent of a master cylinder reservoir.

Also remember that as your pads wear, more and more fluid gets pulled into the system via the lines from the reservoir. 

[TheBoy]

I thought the service interval for brake fluid was 2 years?

[chrisgixer]

Oh we're not interested in all that helpfull stuff TB. Nooooo

[Webby the Bear]

Lol it is two years I believe. For most cars also I think.

As for cross contamination if fluid. . .

I empty the reservoir with a turkey baster and then stick in new fluid. Then to round and bleed. I never worry about the order. When it's coming out clean. .  It's done. End of IMO. You're not going to stop the old fluid from meeting the new unless you siphoned it all and refilled a totally empty system with new and then bled it of air. . . Which you were trying to avoid doing in the first place lol

Just my opinion.

[TheBoy]

Oh we're not interested in all that helpfull stuff TB. Nooooo

Well, I could say I had to use a Tech2 to bleed tractor's brakes when I first got it...  ...but not due to air in ABS.

Happy now?

[TheBoy]

Actually, MDTM and I had to use a tech2 at one of the recent-ish meets as well, now you mention it. That was due to air in ABS.

[chrisgixer]

I was hoping to here about popping a piston out of a caliper on rusty.


Wasn't sure it was actually needed on that occasion either, but as it was available....

[TheBoy]

I was hoping to here about popping a piston out of a caliper on rusty.


Wasn't sure it was actually needed on that occasion either, but as it was available....

In that scenario, it is handy to check there is no air trapped in some corner of the calliper. Esp as it was available.

[chrisgixer]

Couldn't do any harm, as it was indeed available.

(It wasn't needed though )