Castrol SRF fluid costs? - Brindabella Motor Sport Club

msgofast · 14-04-2008, 08:01 PM

What are people paying for the castrol SRF fluid now and who from, last lot we got for the targa car was $160/lt, running the Motul RUF600 in my rally car and kept boiling last weekend, so looking for a cheaper place to get the SRF?

Brenton Kaitler · 14-04-2008, 08:48 PM

We use Castrol Super Response Dot 4 and have never had a problem with boiling in our Evo 6... Costs maybe $30 per litre. Alternatively call Castrol direct if you really want SRF - ask for a cash sale and pay by credit card. Should be around $110 per litre. 1300 367 645. (That's the Industrial team - ask for Ash).

msgofast · 14-04-2008, 09:20 PM

Thanks,

i think the main issue was it was 1200mts above sea level, next event is the same, so need to be prepared!

afifield · 15-04-2008, 07:32 AM

Not sure if Green Goanna (Granville) is still able to get Castrol stuff. Worth a shot though.

Also worth trying Kev at SBCS (Penrith).

No idea what prices they are becasue I don't touch the stuff. I've been told that it's a lot of effort to change over to a silicone based fluid though (clean absolutely everything out).

msgofast · 15-04-2008, 07:47 AM

You live and lean.

afifield · 15-04-2008, 08:03 AM

I thought it was. That makes life easier then.

Bill · 15-04-2008, 08:07 AM

Last time I bought - and was a few years ago, was $60 a tin - run-out sale at one of the Supercheap franchises I think....not that it helps.

From published data, can only see a wet boiling advantage.

http://www.pegasusautoracing.com/gro...pID=BRAKEFLUID

Dave Kelly · 15-04-2008, 09:26 AM

Quote:

Originally Posted by msgofast

SRF is not silicon base.

I think you might find SRF is silicon ester based... (sorry!)

..see attached Technical Data Sheet courtesy of Castrol..

Cheers

Dave

msgofast · 15-04-2008, 09:41 AM

live learn.

Ash Miniken · 15-04-2008, 05:18 PM

Thanks brenton for dobbing me in on this one.
I thought i would try to answer some of you questions to clear a few things up.

Dave thanks for linking to the TDS - yes Castrol SRF is a based on silicon ester materials.

However don't confuse SRF with Dot 5 Silicon brake fluids.

DOT 5 specs came about by request from the US army for thier unique aplications. DOT 5 Silicon fluids suffer from soft pedal feel unlike SRF. The US Army aren't concerned about spongy pedals unlike us motorsport nuts. These fluids are not compatible with most Dot3-4 systems.

SRF is miscible (compatible) with DOT 3-4 fluids and braking systems including DOT5.1 systems (which are sometimes refered to as Super DOT4). However with motorsport use highly regular bleeding of the system is recommended.

MSGOFAST, You will find that while both SRF and Motul 600 have similar Dry Boiling Points of 310 degC (approx 600 degF) their Wet Boiling Points are fairly different. SRF is 270 degC while Motul spec 214 degC (420 degF) last time i checked. Now all brake fluids are designed to absorb water - sounds silly but its imperitive to the way it functions so its important to consider WBP when making your choice. Purchasing some rotor Temp Paints is a great way to see what range of temps you are operating under. It's such a simple thing to do and if often neglected in favour of buying expensive pads and rotors which sometimes aren't needed.
How often do you bleed the brake system?

I'd suggest reading the following page on the StopTech website.

http://www.stoptech.com/tech_info/wp...fluid_1a.shtml

What Carrol Smith doesn't know about race engineering isn't worth knowing and here he and James Walker have compiled what I believe to be one of the best write ups on Brake Fluid on the web. The info on Pressure bleeding was one area that opened my eyes when studying this at Uni.

If you have any other questions feel free to ask and i will try to answer them as soon as i can.

Cheers, Ash
Castrol Industrial

msgofast · 15-04-2008, 08:31 PM

I knew the Motul wet boil was a lot lower, but it was 1/5 of the price

I bled it before the event, and also at one serice we did it, but still boiled, not on a stage as such, waiting in time controls as they start on some were less than 1km to the last.

Wonder what the boil points are at 1200mts above sea level?

ropie · 15-04-2008, 10:14 PM

Just got some intercom stuff from Rallynuts and also some SRF fluid, is 32 pounds which is about $80 I think. It's good stuff but maybe overkill for me as I don't get within cooee of boiling brake fluid.

Memo; use brakes more in next event.

Rallydat · 16-04-2008, 12:14 AM

Quote:

Memo; Drive faster to use brakes more in next event.

Fixed

Rallyray · 18-07-2008, 03:08 PM

Quote:

Originally Posted by msgofast

What are people paying for the castrol SRF fluid now and who from, last lot we got for the targa car was $160/lt, running the Motul RUF600 in my rally car and kept boiling last weekend, so looking for a cheaper place to get the SRF?

Castrol Distributer - High Street Queanbeyan.

1 litre Bottle- Wait for it....... $92

Google for phone number...