Rapter

Hi Everyone

is there a right and wrong dot 4.0 fluid to be used on our cars?

Porsche stuff is $44.00,per litre wanted something cheaper, but looks like there is not much savings.
I was thinking of buying something from amazon such as:

Norge911

You don’t have to use the Porsche stuff but different fluids have different boil point and some absorb water faster, so don’t go cheap and buy high quality fluid to stop your $100k car.
audi brand is an alternative.

bkrantz

You can get Pentosin DOT 4 brake fluid at the chain auto parts stores for about $16.

dgjks6

Technically the OEM Porsche fluid is a DOT4, LV, class 6

Something about the low viscosity better for the ABS. Per suncoast recommended on all 2005 and newer.

Autozone sells it by the liter or you can get a 5L bottle of pentosin that meets the specs for $35 from FCP euro.

But most people seem to ignore it and use any high quality dot4 without issues.

Jack F

There were issues with not using Pentosin LV. But many also have verified that Motul 600 is problem free and higher performace.

JW911

I am pretty sure I read about failure to use LV (low viscosity) causing a squeaky master cylinder.

Spyerx

the standard dot4 is all pretty similar temp wise
the LV is 'thinner' and supposedly reacts more quickly to electronic systems
For track use you want to use a high temp fluid. I've used Endless RBF650 and currently use Brembo HTC64T in my other cars. The 991 gets Pentosin. Motul is good, Castrol SRF is good.

These newer cars have so much heat and braking capacity the issue of 'fade' while real is diminished. But, drive my 71 aggressive and yeah, you want GOOD fluid on that thing, the brakes can swamped quickly.

MikeL31

I used ate typ 200 when I installed my brembo gt kit back in December, never got any kind of noise or squeaky sound as others have said.

LexVan

And always use from a fresh, unopened, bottle.

Rapter

Which company manufacturers the brake fluid for Porsche, which Porsche then bottles and re-sells to customers?

AdamSanta85

Porsche Motorsport runs Endless RF-650 fluid

I bet the street car factory fill is Pentosin.

Rapter

Still looking to avoid the Porsche tax at the parts dept. would love to know who their oem supplier is.

worf928

Y. This—^

Any DOT 4 LV should be fine. Doesn’t have to be Pentosin, but needs to be LV.

https://rennlist.com/forums/991/9781...r-squeaks.html

worf928

I’m pretty sure: Porsche’s relabeled DOT4 LV is Pentosin while the non-LV is ATE.

Spyerx

The Porsche canister is identical to that of pentosin. I’d bet pentosin.

porsche Motorsports did run endless. They may still or they may run Brembo htc64t