brake fluid recommendations

Read T · 12-23-2014, 04:35 PM

Quote:

Originally Posted by cossie1600

What? WHat fluid are you buying that has a 500+ F WET boiling point. Forget about dry boiling point, all brake fluid will absorb moisture at some point

Mercury.

Read T · 12-21-2014, 02:01 PM

That's interesting. Also, I will highly highly highly recommend PFC 665. Holds up great on track and the other guys at the last DE were jelly of me for having it.

Elmo370z · 02-12-2015, 08:57 AM

What is everyone's thoughts on motul 5.1 non silicone base brake fluid for street use?

Chris_B · 02-12-2015, 09:17 AM

Quote:

Originally Posted by Elmo370z

What is everyone's thoughts on motul 5.1 non silicone base brake fluid for street use?

DOT 5.1 has a lower viscosity index, which is helpful with ABS, especially in colder climates. Motul's is good, but nothing special. Like all of their brake fluids, it is a product of "package engineering".

JARblue · 02-12-2015, 09:20 AM

Quote:

Originally Posted by Elmo370z

What is everyone's thoughts on motul 5.1 non silicone base brake fluid for street use?

Motul 5.1 is perfectly fine for normal street driving. Definitely recommend the RBF600 or something with higher boiling points if you plan to do any repetitive hard braking.

Rusty · 02-12-2015, 01:18 PM

Quote:

Originally Posted by Elmo370z

What is everyone's thoughts on motul 5.1 non silicone base brake fluid for street use?

Just a heads-up. Do not mix silicone with non-silicone. You'll get jelly as the by-product.

The 5.1 fluid comes both ways. Make sure of which one you have.

Chris_B · 02-13-2015, 07:06 PM

Quote:

Originally Posted by Rusty

Just a heads-up. Do not mix silicone with non-silicone. You'll get jelly as the by-product.

The 5.1 fluid comes both ways. Make sure of which one you have.

To further highlight how confusing the DOT standards are, DOT 5 and DOT 5.1 are completely incompatible.

DOT 5 = silicone (should really never be used in a car)
DOT 5.1 = borate ester-based (standard brake fluid). Much like DOT 4, but with a lower viscosity rating.

Chris

Elmo370z · 02-12-2015, 10:18 AM

Thanks fellas for all the help

Elmo370z · 02-12-2015, 07:48 PM

I"m pretty sure I still have stock brake fluid. Is that no go on that?

Rusty · 02-12-2015, 08:14 PM

Quote:

Originally Posted by Elmo370z

I"m pretty sure I still have stock brake fluid. Is that no go on that?

Stock brake fluid is non-silicone, cheap DOT4. So you would be ok.

Make it easy on yourself. Just get Motul 600 and call it a day.

Elmo370z · 02-15-2015, 10:37 AM

Baxter you know i don't speak spanish

Gungrave · 08-06-2016, 01:18 AM

So dumb question. I have a 10 370Z base model. Is the stock brake fluid DOT3 or DOT4? I'll probably be changing my brakes/rotors and figured I'd have Nissan flush the brake fluid also. I've read the posts within this thread and I'm still between 5.1 or 600 for brake fluid. If stock is DOT3 then I'm leaning more toward 5.1. If stock is DOT4 then I'll go 600. I just don't want any issues later on down the road. I don't track my car at all and don't plan on it. And honestly I drive like a grandma lol. Also if stock is DOT3 would switching to 600 cause any issues? I've been reading how 600 could possibly cause an issue with the ABS system.

JARblue · 08-06-2016, 10:14 AM

OEM fluid is DOT 3. But you still want the Motul RBF600

Gungrave · 08-06-2016, 05:16 PM

Quote:

Originally Posted by JARblue

OEM fluid is DOT 3. But you still want the Motul RBF600

Thanks. One more dumb question. If I replace the rotors/pads and fluid, should I go ahead and replace the brake lines/hoses too?

JARblue · 08-08-2016, 07:11 AM

Quote:

Originally Posted by Gungrave

Thanks. One more dumb question. If I replace the rotors/pads and fluid, should I go ahead and replace the brake lines/hoses too?

Not necessarily, but if you're spending money, you might as well. You'll need to bleed the brakes when you install new brake lines, so you want to time it with a brake flush. I did my rotors and pads early on, but I didn't install SS lines until several years later.

12-21-2014, 02:01 PM	#2 (permalink)
Read T A True Z Fanatic Join Date: May 2012 Location: Raleigh, NC Posts: 1,046 Drives: 11 Nissan 370z BC 6M Rep Power: 19	That's interesting. Also, I will highly highly highly recommend PFC 665. Holds up great on track and the other guys at the last DE were jelly of me for having it. __________________ 2011 Nissan 370z Black Cherry Sport Pkg - Daily Driver, , 1960 Morgan +4 fun car, 1986 BMW 325ES, 1998 M3 and 1996 Spec Miata - Race Cars SUPPORT TEAM WINSOME RACING - WRL, CHUMP, LEMONS

02-15-2015, 10:37 AM	#11 (permalink)
Elmo370z A True Z Fanatic Join Date: Apr 2013 Location: st. petersburg Posts: 5,724 Drives: 09 nissan 370z Sp M6 Rep Power: 295379	Baxter you know i don't speak spanish JARblue and osbornsm like this.

08-06-2016, 10:14 AM	#13 (permalink)
JARblue A True Z Fanatic Join Date: Mar 2011 Location: Austin, TX Age: 44 Posts: 36,450 Drives: 11 Z34, 98 E36 M3 Rep Power: 2684441	OEM fluid is DOT 3. But you still want the Motul RBF600 __________________ 2011 370Z 6MT Sport Gun Metallic \| ARC \| CJM \| Ecutek \| FI \| Fujimura \| R2C \| SPL \| Stillen \| TWM \| Z1 \| ZSpeed \|

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02-12-2015, 08:57 AM	#3 (permalink)
Elmo370z A True Z Fanatic Join Date: Apr 2013 Location: st. petersburg Posts: 5,724 Drives: 09 nissan 370z Sp M6 Rep Power: 295379	What is everyone's thoughts on motul 5.1 non silicone base brake fluid for street use?

02-12-2015, 10:18 AM	#8 (permalink)
Elmo370z A True Z Fanatic Join Date: Apr 2013 Location: st. petersburg Posts: 5,724 Drives: 09 nissan 370z Sp M6 Rep Power: 295379	Thanks fellas for all the help

02-12-2015, 07:48 PM	#9 (permalink)
Elmo370z A True Z Fanatic Join Date: Apr 2013 Location: st. petersburg Posts: 5,724 Drives: 09 nissan 370z Sp M6 Rep Power: 295379	I"m pretty sure I still have stock brake fluid. Is that no go on that?

08-06-2016, 01:18 AM	#12 (permalink)
Gungrave Base Member Join Date: Jul 2010 Location: Brandon, FL Posts: 130 Drives: 2010 370Z Rep Power: 1164	So dumb question. I have a 10 370Z base model. Is the stock brake fluid DOT3 or DOT4? I'll probably be changing my brakes/rotors and figured I'd have Nissan flush the brake fluid also. I've read the posts within this thread and I'm still between 5.1 or 600 for brake fluid. If stock is DOT3 then I'm leaning more toward 5.1. If stock is DOT4 then I'll go 600. I just don't want any issues later on down the road. I don't track my car at all and don't plan on it. And honestly I drive like a grandma lol. Also if stock is DOT3 would switching to 600 cause any issues? I've been reading how 600 could possibly cause an issue with the ABS system.