New 4 Dot brake fluid

[television]

Bendix has launched a new 4 dot low viscosity brake fluid for cars with ABS and ESP. the brake fluid meets the requirements of the 4 dot specs with a low viscosity under cold conditions (<800mm 2/s -40 degrees) this allows for rapid transfer of hydraulic preasure in ABS and ESP systems, leading to optimal use orf these functions.

malcolm

 

[mlc]

Television,

sounds very interesting, although perhaps a little high brow.

I dont recognise the units of measure you are quoting for viscosity, could you clarify the details for us and perhaps compare with more "traditional" Dot 4 brake fluids.

Mark.

 

[Charlotte001]

What ?

*Blonde moment* why would you want brake fluid to -40 when the pads and disc's also the fluid (under pressure) will rarely be that low. I forget the actual figure of the temperature of an ABS system fluid. It's never -40 oh of course if you're sitting in Alaska then it might (that's why we have Range Rovers for that) *oh no she said the planet killing word*


Charlotte

 

[mlc]

Charlotte,

Not a blonde moment, a very sensible point really, however:

Whilst its true that the brake disks / pads and the fluid close to them will get hot when the brakes are used thats not the case when you start off on a cold morning and use the brakes for the first time, they are more or less at air temperature.

That said - 40 (C I assume) is probably overkill for us here in South Manchester, however who knows what will happen with global warming caused by your petrol Range Rover, no that doesnt work either cos it will get warmer not colder - anyone want to buy lots of spare antifreeze?

Mark.

 

[television]

Television,

sounds very interesting, although perhaps a little high brow.

I dont recognise the units of measure you are quoting for viscosity, could you clarify the details for us and perhaps compare with more "traditional" Dot 4 brake fluids.

Mark.

The info leaflet was sent to me, I read it and it made sense so I put the info up complete with specification.

When I spray cars I use a flow cup (BS) that is I mix the paint fill the flow cup and the paint must flow through in X amount of time at X degree's cent;

If we take the same with oil, then a quantity of oil must pass through an (BS)orifice within X time at X degrees.

I did not put it up to be clever,as we do have oil men in this forum who no much more than me. Re how does it compare ? other makes only quote the quantity figure. I know of at least 6 different ways to measure oil. In Brake fluid testing I do not think the Shear is mesured.

In the future I will not include specs, as they are hard to compair.
I think this one is quite good, otherwise they would not have included the full spec

Malcolm

 

[television]

Charlotte,

Not a blonde moment, a very sensible point really, however:

Whilst its true that the brake disks / pads and the fluid close to them will get hot when the brakes are used thats not the case when you start off on a cold morning and use the brakes for the first time, they are more or less at air temperature.

That said - 40 (C I assume) is probably overkill for us here in South Manchester, however who knows what will happen with global warming caused by your petrol Range Rover, no that doesnt work either cos it will get warmer not colder - anyone want to buy lots of spare antifreeze?

Mark.

-40 just happens to be the industry standard at which these oils are measured

Malcolm

 

[mlc]

The info leaflet was sent to me, I read it and it made sense so I put the info up complete with specification.

When I spray cars I use a flow cup (BS) that is I mix the paint fill the flow cup and the paint must flow through in X amount of time at X degree's cent;

If we take the same with oil, then a quantity of oil must pass through an (BS)orifice within X time at X degrees.

I did not put it up to be clever,as we do have oil men in this forum who no much more than me. Re how does it compare ? other makes only quote the quantity figure. I know of at least 6 different ways to measure oil. In Brake fluid testing I do not think the Shear is mesured.

In the future I will not include specs, as they are hard to compair.
I think this one is quite good, otherwise they would not have included the full spec

Malcolm

and

-40 just happens to be the industry standard at which these oils are measured

Television.

Nice to see you are working to your normal high standard, next you will be sorting out the difference between manual and auto gearboxs!

After a little research I can tell you that the figure quoted refers to a Kinematic viscosity of 800 mm2/second at -40 F, not -40 C. This refers to the American DOT standard which in their normal way mixes SI and none SI units. The DOT4 standard requires a figure of 1800. Interestingly the lesser DOT3 standard imposes a lower figure of 1500, so perhaps low is not always good.

Also worth noting that a second measurement is also included in the standard at +212 F, I would have thought that for the average UK driver that would be a far more interesting comparision.

Mark.

 

[television]

I smelt a rat in your posting. I thought the info was useful to members,as this product exceeded the DOT 4 spec. You say I said -40C not true, I said -40. I said degrees cent; for my paint flow cup and nothing else.
You had to go to a Web site, I worked it out in my head, and I was right in what I said.
You will have egg on your face if you care to visit the Webbsite included here and you will see that both -40C and F are included in the spec.

There is always someone like you who knows more than one of the largest brake component manufactures in the world.

Soon I will put up articles where I have repaired relay boxes etc to members of this forum and returned them free of charge fully working. If you like I can E mail you just before, to save you sitting there waiting for a posting from me.
Have a nice day Malcolm

Don't forget to visit, it does say -40c as well
http://www.gs610.com/specifications.htm

 

[mlc]

No rat to be smelt, I was seriously interested in how different this product was to "standard" DOT4 brake fluid, information sadly you arent apparently up to providing.

To be fair you said

"(<800mm 2/s -40 degrees)"

Which doesnt really mean anything. The DOT4 spec (not 4 Dot as you also state) gives the temperature in F. not C. which is clearly shown on your spec sheet.

As I am sure you know (and I didn't) -40C = - 40F.

However as the whole world other than you will have realised by now, without some indication of how much better this brake fluid is in real terms rather than for artic use, do we really care.

I am of course still waiting for your words of wisdom concerning the gearbox oil level service bullitin for my auto SLK fitted (according to you) with a manual box, but i'm not holding my breath.

Mark