The best brake fluid for an Infiniti G37 depends on how you drive, but quality DOT 3, DOT 4, DOT 5.1, and racing fluids all have strong options in 2026.
A good fluid helps keep the pedal firm under heat and hard stops.
This list covers five solid picks for daily driving, spirited use, and track days.
You’ll also see what matters most, including wet boiling point, bottle size, and compatibility with the G37.
| LIQUI MOLY – 250mL Brake Fluid DOT 4 (20152) |
| Daily Driver Pick | Fluid Type: DOT 4 brake fluid | Volume: 250 mL | Brand: Liqui Moly | VIEW LATEST PRICE | Read Our Analysis |
| Castrol SRF Racing Brake Fluid – 1 Liter 12512 |
| Track-Ready Choice | Fluid Type: Racing brake fluid | Volume: 1 liter | Brand: Castrol | VIEW LATEST PRICE | Read Our Analysis |
| Genuine Toyota Fluid 00475-1BF03 Brake Fluid – 12 oz. |
| OEM-Safe Option | Fluid Type: DOT 3 brake fluid | Volume: 12 oz | Brand: Toyota | VIEW LATEST PRICE | Read Our Analysis |
| Liqui Moly Brake Fluid DOT 5.1 | 250 ml | Brake Fluid | SKU: 3092 |
| High-Performance Pick | Fluid Type: DOT 5.1 brake fluid | Volume: 250 mL | Brand: Liqui Moly | VIEW LATEST PRICE | Read Our Analysis |
| STP DOT 4 Synthetic Brake Fluid 12 Oz |
| Budget-Friendly Pick | Fluid Type: DOT 4 synthetic brake fluid | Volume: 12 oz | Brand: STP | VIEW LATEST PRICE | Read Our Analysis |
More Details on Our Top Picks
LIQUI MOLY – 250mL Brake Fluid DOT 4 (20152)
For a daily driver pick, LIQUI MOLY DOT 4 suits your Infiniti G37’s routine braking needs well. You get a 250 mL bottle of liquid brake fluid, part number 20152, sized nicely for topping off or a small service without extra clutter on your shelf.
It works with:
- disc brake systems
- drum brake systems
- ABS
- clutch systems
And that versatility matters. You want one fluid that covers the basics cleanly. LIQUI MOLY backs it with a manufacturer’s warranty, plus Amazon’s 30-day return window. Customer feedback trends positive too. Not glamorous, sure, but brake fluid doesn’t need a personality, just dependable compatibility.
- Fluid Type:DOT 4 brake fluid
- Volume:250 mL
- Brand:Liqui Moly
- Item Form:Liquid
- Container Type:Not specified
- Recommended Use:Brake and clutch systems
- Additional Feature:ABS system compatible
- Additional Feature:Excellent wear protection
- Additional Feature:Diesel particulate suitable
Castrol SRF Racing Brake Fluid – 1 Liter 12512
Castrol SRF is a track-ready choice for G37 drivers who push hard and need serious heat control. You get a 1-liter bottle of racing-focused hydraulic brake fluid, part number 12512, built for rallying, track days, and repeated hard stops without vapor lock drama.
Why it stands out:
- Very high wet boiling point: 270 °C
- Flash point: 210 °C
- Exclusive European formula
- Strong anti-vapor lock protection
Should your G37 sees aggressive canyon runs or motorsport use, this fluid fits the job. And the 33.81 fl oz bottle gives you enough for a thorough flush, which your brakes will appreciate, even assuming your wallet grumbles slightly.
- Fluid Type:Racing brake fluid
- Volume:1 liter
- Brand:Castrol
- Item Form:Liquid
- Container Type:Bottle
- Recommended Use:Racing and motorsport braking
- Additional Feature:270°C wet boiling
- Additional Feature:Anti-vapor lock protection
- Additional Feature:Racing-focused formula
Genuine Toyota Fluid 00475-1BF03 Brake Fluid – 12 oz.
Toyota’s oem-safe option suits G37 owners who want dependable DOT 3 fluid without overthinking the refill. You get 12 fluid ounces, enough for a straightforward top-off or small service, and it’s formulated for brake systems, hydraulic clutch systems, and the primary cylinder.
Why consider it?
- Meets or exceeds DOT 3 specs
- High boiling point helps reduce vapor lock
- Corrosion protection helps prevent leaks
- Won’t form harmful sediment
It’s a Toyota Genuine fluid, built to OEM standards, so you’re getting predictable quality. Should your G37 calls for DOT 3, this bottle gives you a simple, no-drama choice. Sometimes boring is exactly what brakes need!
- Fluid Type:DOT 3 brake fluid
- Volume:12 oz
- Brand:Toyota
- Item Form:Liquid
- Container Type:Bottle
- Recommended Use:Brake and hydraulic clutch systems
- Additional Feature:Meets DOT 3
- Additional Feature:Corrosion leakage protection
- Additional Feature:No harmful sediment
Liqui Moly Brake Fluid DOT 5.1 | 250 ml | Brake Fluid | SKU: 3092
Liqui Moly’s high-performance pick suits G37 owners who want a compact, German-made DOT 5.1 fluid for demanding street use. You get abottle, about 8.45 ounces, which works well for topping off or small maintenance jobs whenever you don’t need a giant container taking up shelf space.
Key details:
- SKU: 3092
- Weight: 0.27 kg
- Bottle format
- Made in Germany
And it’s built for automotive brake systems, plain and simple. In case you want a recognizable brand with strong marketplace visibility, this one ranks well in brake fluids. Just make sure your G37’s system calls for DOT 5.1 before you pour anything in.
- Fluid Type:DOT 5.1 brake fluid
- Volume:250 mL
- Brand:Liqui Moly
- Item Form:Liquid
- Container Type:Bottle
- Recommended Use:Automotive brake systems
- Additional Feature:Made in Germany
- Additional Feature:DOT 5.1 formula
- Additional Feature:Automotive brake specific
STP DOT 4 Synthetic Brake Fluid 12 Oz
Should you want a budget-friendly pick for your Infiniti G37, STP DOT 4 covers the basics without cutting corners.
You get a 12-ounce bottle of synthetic DOT 4 fluid that meets FMVSS No. 116 and SAE J1704, so it fits brake systems that call for DOT 4. It’s compatible with ABS, disc, and drum setups, and it helps fight corrosion while maintaining braking performance as pads wear and fluid drops.
Why it works:
- Raises dry boiling point protection
- Helps reduce vapor lock risk
- Supports reliable pedal feel
Keep the part numbers handy:
- Part 17921
- Model 18670
Simple, practical, and no drama, which your brakes will appreciate.
- Fluid Type:DOT 4 synthetic brake fluid
- Volume:12 oz
- Brand:STP
- Item Form:Liquid
- Container Type:Bottle
- Recommended Use:Vehicle brake systems
- Additional Feature:Meets FMVSS 116
- Additional Feature:Meets SAE J1704
- Additional Feature:Vapor lock protection
Factors to Consider When Choosing Brake Fluid for Infiniti G37
Whenever I choose brake fluid for an Infiniti G37, I start with the correct DOT specification, then I look at dry and wet boiling points because heat and moisture can turn a firm pedal into a soft, confidence-killing mess. And I also make sure the fluid works well with the ABS system, fits how you drive, whether that’s daily commuting or harder performance use, and offers strong corrosion protection so the lines, calipers, and chief cylinder don’t age before their time. Those five checks keep the decision simple, and yes, your brakes will thank you!
Correct DOT Specification
Because the right brake fluid starts with the correct DOT spec, I’d initially check the Infiniti G37 owner’s manual or the primary cylinder cap before pouring in anything, since that label confirms whether the system calls for DOT 3, DOT 4, or DOT 5.1.
From there, I’d keep these basics in mind:
- DOT 3, DOT 4, and DOT 5.1 are glycol-based, while DOT 5 is silicone-based and not interchangeable.
- I’d stick with Infiniti’s specified grade, because the wrong type can damage seals and hurt braking feel.
- Should you drive hard or tow, I’d only move to a higher approved DOT grade.
- And in case I upgraded to another manufacturer-approved grade, I’d do a complete flush so old fluid doesn’t dilute the new spec. Brake systems hate confusion, frankly.
Dry And Wet Boiling
Confidence matters here, and I’d pay close attention to both dry and wet boiling points before choosing brake fluid for an Infiniti G37. Dry boiling point tells me how much heat fresh fluid can take before vaporizing, which matters during hard, repeated stops.
But wet boiling point is the real-world number I watch most, because brake fluid absorbs moisture over time. That lowers boiling resistance and can soften pedal feel.
I’d look for:
- A strong dry boiling point for maximum fade resistance
- A high wet boiling point, ideally well above 140 to 160 °C for many DOT 4 fluids
- Extra margin should you tow, run performance pads, or drive aggressively
And don’t forget maintenance. Replacing fluid on schedule restores safety margin, raises the wet boiling point, and keeps surprises where they belong, not corners.
ABS System Compatibility
Even should a brake fluid looks great on paper, I’d still make ABS compatibility a non-negotiable for an Infiniti G37, since the ABS hydraulic unit depends on the right fluid chemistry, compressibility, and heat resistance to pulse pressure correctly during hard stops.
I’d keep this checklist in mind:
- Match the owner’s manual DOT spec, usually DOT 3, DOT 4, or DOT 5.1.
- Stick with glycol-ether or polyalkylene glycol fluid, not silicone DOT 5, because ABS pumps hate cavitation.
- Watch wet and dry boiling points, since repeated ABS cycling builds heat fast.
- Change fluid on schedule. Moisture lowers boiling point and can corrode ABS valves, passages, and sensors.
- Confirm seal and line compatibility in service documentation, because swollen rubber parts create expensive headaches. ABS repairs aren’t exactly comedy material!
Daily Vs Performance Use
Usually, I’d choose brake fluid for an Infiniti G37 based on how you actually drive it, since a commuter that sees stop-and-go traffic every day doesn’t need the same heat margin, pedal consistency, or shortened service interval as a G37 that spends weekends on mountain roads or track sessions.
For daily use, I’d keep it simple:
- DOT 3 or DOT 4
- Wet boiling point above about 140°C
- Follow the factory DOT spec and service interval
For spirited driving, I’d step up fast:
- Choose DOT 4 with a wet boiling point over 180 to 200°C.
- Look for lower compressibility, which helps keep the pedal firm.
- Pick fluid with stable high-temp viscosity for consistent response.
And should you drive hard often, change it sooner. Heat eats safety margin, annoyingly fast.
Corrosion Protection Quality
Because brake fluid lives in a sealed hydraulic system full of steel, aluminum, rubber, and plastic, I pay close attention to corrosion protection quality before I worry about flashy boiling-point numbers.
For your G37, I’d focus on:
- Anti-corrosion additives, especially amine- or borate-based inhibitors, because they shield the principal cylinder, calipers, and lines.
- OEM-spec fluid that meets SAE or JIS corrosion standards, since those formulas show controlled metal corrosion rates under accelerated conditions.
- Material compatibility. Should a fluid swell seals or harden hoses, leaks and internal rust can follow. Not fun.
I also prefer low-moisture-absorption formulas and strict service intervals, because water sneaks in, drops boiling point, and invites corrosion. And during fluid changes, I inspect for rust, dark debris, and flush out contaminants before they chew up expensive hydraulic parts.
Bottle Size And Value
After I’ve checked corrosion protection and material compatibility, I look at bottle size and plain old value, since buying the right amount of brake fluid for an Infiniti G37 saves money and helps keep moisture out of the system.
I match size to the job:
- About 250 mL works for a simple top-up.
- Around 1 L makes more sense for a full flush or servicing multiple cars.
I also compare cost per milliliter, because bigger bottles usually cost less per unit. But I only buy large containers provided I’ll use all of it. Brake fluid is hygroscopic, which means it absorbs moisture once opened, and that’s bad news. I check the G37 service manual for system capacity, buy enough for one complete flush, and store leftovers sealed, labeled, and used within about a year.
Frequently Asked Questions
How Often Should Brake Fluid Be Flushed in an Infiniti G37?
I’d flush your Infiniti G37’s brake fluid every 2 years or 20,000–30,000 miles, whichever comes initially. I also recommend checking it sooner should you track the car, drive hard, or notice dark fluid.
Can Old Brake Fluid Damage ABS Components in the G37?
Yes, I’ve seen old brake fluid damage G37 ABS components because it absorbs moisture, corrodes valves and pump parts, and carries debris. I recommend flushing it every two to three years to protect your system.
Is Brake Fluid Replacement Covered Under Infiniti Warranty Plans?
Usually, I’d say no—brake fluid replacement isn’t covered under Infiniti warranty plans because it’s routine maintenance. I’d check your specific factory, extended, or prepaid maintenance plan, since some packages might include scheduled fluid service.
What Are Symptoms of Contaminated Brake Fluid in a G37?
I’d watch for a soft pedal, longer stops, and spongy braking; I’d also notice dark fluid, a burning smell, or ABS issues. Should you feel hesitation, hear noises, or see leaks, I’d change it soon.
Can I Switch Brake Fluid Brands Without Flushing the System?
Yes, I can switch brake fluid brands without flushing provided the new fluid matches your required DOT specification and chemistry. I’d still flush should contamination, moisture, or unknown fluid be present, because mixing can reduce performance.
