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AVS - cheeky feckers!


s4dreamer
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Dropped my car off for service this morning, and when I got home I had a call from Audi saying that it was overdue for brake fluid replacement at £72 + VAT!!!!

Apparently it needs new brake fluid every 2 years, so I asked why it isn't included in the AVS then. The answer is that not all cars have the same requirement for brake-fluid change, so they have it as a separate item.

I appreciate that the brake fluid can get moisture in it, but I haven't noticed the brakes getting spongy at all, so I told 'em to get lost. I'll certainly have it done if it becomes noticeable, but I'm not paying £85 for a brake fluid change the car doesn't need.

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Apparently it needs new brake fluid every 2 years, so I asked why it isn't included in the AVS then. The answer is that not all cars have the same requirement for brake-fluid change, so they have it as a separate item.

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I'm off to Executive Audi at St Albans later on a 'secret mission', I will ask them the same question and see what answer I get.

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Apparently it needs new brake fluid every 2 years,

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Hi guys,

My A3 1.8T is also due to have this done. I also have not noticed anything wrong with the brakes (car has done 12700 miles). Can anyone tell me if this is really necessary???

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I don't beleive that it's necessary unless you've noticed your brakes sfotening recently.

My wife's car Golf went in for AVS around 9 months ago, and they too tried to get us to have the brake fluid replaced. Since then, there has been no noticeable change in braking, so I assume it's still okay. I'll have it done either as soon as I notice a change in braking effect or at the next service - whichever is sooner.

The reason they want to change the fluid is that moisture can be absorbed into it over a prolonged period, which obviously compresses better than brake fluid and makes the brakes feel softer (or "spongy").

Obviously, your brakes are an important safety element in your car and you should respect them appropriately in servicing, but I think VAG are a little over enthusiastic in telling you to have it replaced.

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I'm not on AVS so I get the interim service and then the najor one every other year. I went in recently for the biggy and I got a call saying "the car's two years old, do you want the fluid changed?". I said yes as the fluid does degrade. It cost me £74+VAT mad.gif

I have no idea why it's not included in a 24 month service!

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The reason they want to change the fluid is that moisture can be absorbed into it over a prolonged period, which obviously compresses better than brake fluid and makes the brakes feel softer (or "spongy").

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I always thought that it was the moisture boiling that causes the spongy brakes. Water is just as incompressible as brake fluid, it's just that brake fluid doesn't expand into very compressible steam at high temperatures.

We do pressure testing of new pipework out here (offshore) using water at pressures of up to 800 bar (approx 12,000 psi). If the pipework is absolutely full of water, it only takes a few strokes of the pump to get the line up to this pressure. However, if there is any air in the line, it can take hours of pumping to get the line fully pressurised.

Donald

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s4dreamer, did you see my car parked up there???

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Nope no S-cars at all - I always make a point of checking out what's in the car park in case there's anything interesting in there - very disappointing 'cos even the RS6 wasn't in. Hope they haven't sold it as I still haven't got around to a test drive.

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[ QUOTE ]

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The reason they want to change the fluid is that moisture can be absorbed into it over a prolonged period, which obviously compresses better than brake fluid and makes the brakes feel softer (or "spongy").

[/ QUOTE ]

I always thought that it was the moisture boiling that causes the spongy brakes. Water is just as incompressible as brake fluid, it's just that brake fluid doesn't expand into very compressible steam at high temperatures.

We do pressure testing of new pipework out here (offshore) using water at pressures of up to 800 bar (approx 12,000 psi). If the pipework is absolutely full of water, it only takes a few strokes of the pump to get the line up to this pressure. However, if there is any air in the line, it can take hours of pumping to get the line fully pressurised.

Donald

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Damn, caught out in the bullsh*t blush.gif

If your reasoning is correct Donald (and I have no reason to doubt it), that kind of implies that we wouldn't notice sponginess until the brakes got hot enough to cause the moisture in the fluid to boil. This ain't likely to happen under normal town driving conditions is it ? Thus I might not know that there was moisture in the pipes until I did some spirited driving (say at the Buxton meet) ?

Hmmm.... anyone else got any thoughts on this ?

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