Fluids

MECACYL ADDITIVE

Engine oil

Transmission oils

Brake fluid

DSG gearbox oil change

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🛢️ Fluid Category – High-performance engine lubrication, cooling and reliability

At STR Performance , we understand that fluids are the lifeblood of your engine and transmission. In a sports car, every mechanical component—engine, transmission, differential, brakes—operates at much higher speeds and temperatures than in standard use. Therefore, it's essential to use high-performance fluids that can protect, cool, and stabilize your mechanical components in the most extreme conditions.

Our Fluid category includes all the lubricants, liquids and additives needed to maintain the reliability of your preparation, whether it is used on the road, track, drift, run or competition.

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🔧 Our fluid subcategories in detail:

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🛠️ High-performance engine oil

It is the engine's vital fluid. A high-performance engine oil allows:

• Optimal lubrication hot and cold

• Extreme temperature resistance (up to 140°C and above in track use)

• Reducing friction to preserve performance

We offer oils:

• 100% synthetic, in grades 5W30, 5W40, 10W60, etc.

• Formulated for naturally aspirated or turbocharged, gasoline or diesel engines

• Recommended for reprogrammed or supercharged cars

SEO keywords: sports engine oil, 100% synthetic engine oil, track engine lubricant, reinforced turbo engine oil

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⚙️ Gearbox oil and differential oil

Often neglected, lubrication of the gearbox and differential is nevertheless essential for the reliability of the transmission, especially with a reinforced clutch, an LSD, or a short gearbox.

Benefits :

• Less internal friction, therefore more mechanical efficiency

• Better resistance to high temperatures

• Protection of synchros, pinions, bearings

We offer:

• GL4 / GL5 oils

• Specific formulations for manual transmission, self-locking differential, 4x4

SEO keywords: sports gearbox oil, LSD differential oil, performance transmission fluid, heavy-duty gearbox lubricant

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🛑 High temperature brake fluid

In sporty driving or on the track, conventional brake fluids quickly heat up, causing dangerous fading (soft pedal).

Our racing brake fluids offer:

• High dry and wet boiling point (DOT 4 / DOT 5.1)

• Optimal chemical stability

• Compatibility with all high-performance braking systems

SEO Keywords: DOT 5.1 brake fluid, racing brake fluid, high temperature brake fluid, competition braking

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❄️ High performance coolant

Our coolants are formulated to:

• Resist high temperatures

• Prevent corrosion of engine components

• Provide excellent heat dissipation under heavy use

Ideal as a complement to a performance radiator, a sports thermostat or a reinforced cooling kit.

SEO keywords: competition coolant, high temperature engine fluid, performance antifreeze, sports car cooling

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🧪 Engine and transmission additives

We offer a selection of high-performance additives for:

• Strengthen engine protection

• Clean internal circuits (oil, gasoline)

• Reduce wear, friction or consumption

• Improve gear changes or differential behavior

Can be used as a preventative or curative treatment, compatible with engine or gearbox oils.

SEO keywords: engine oil additive, sports injector cleaner, gearbox protector, LSD differential additive

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🔄 Power steering fluid and hydraulic fluid

Good steering or hydraulic (clutch) fluid is essential to maintain system precision, reliability and endurance.

Our fluids are designed for:

• Preserve seals and hydraulic components

• Resist high temperatures

• Reduce noise and hydraulic losses

SEO keywords: sport power steering fluid, clutch hydraulic fluid, performance power steering oil, track steering

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🚗 Vehicle compatibility

Our fluids are compatible with a wide range of sports and tuned cars:

Volkswagen Golf GTI / R, Audi S3 / RS3, BMW M, Renault Sport, Ford Focus RS/ST, Honda Civic Type R, Peugeot 208 GTI, Nissan 350Z / 370Z, Toyota Supra / GR Yaris, and many more.

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✅ Why choose STR Performance for your fluids?

• 🧪 Products tested in extreme conditions (trackdays, drift, circuit)

• 🛢️ Lubricants & liquids from well-known brands (Motul, Castrol, Red Line, Millers Oils, etc.)

• ⚙️ Guaranteed compatibility for turbo engines, reinforced gearboxes, LSD differentials

• 🚚 Stock in France, fast delivery

• 🧠 Technical support on the choice of your fluids according to your use

You will find Motul 300V, competition and Motul Historique oil.

We resell Motul 300v, but also Castrol, Shell and others.

Do not hesitate to contact our hotline service for guidance if you have any doubts about the correct fluid for your vehicle.

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FAQ: The Most Frequently Asked Questions

How do I track my package?

As soon as the shipment is made, you will receive an email with a tracking link. You can also find this link in your customer account, under "My Orders." Delivery is tracked via Chronopost, Colissimo, DPD, or UPS.

How to contact Customer Service?

You can contact our customer service by email at https://strperformance.com/en/ or by phone at +33 01 34 67 70. We are available Monday to Friday, from 9:00 a.m. to 12:00 p.m. and from 2:00 p.m. to 5:00 p.m. Customer service is closed between 12:00 p.m. and 2:00 p.m. Response guaranteed within 24 to 48 hours (excluding weekends and public holidays).

Which countries do you deliver to?

STR Performance ships your orders all over the world: mainland France, French overseas departments and territories, Europe (Belgium, Switzerland, Spain, Germany, etc.) as well as internationally (Canada, Maghreb, overseas, etc.). Our shipping partners include Chronopost, Colissimo, DPD and UPS, depending on the country, weight and size of the package. Shipping costs are automatically calculated at the checkout stage based on your address. Each shipment is tracked online and secure. We deliver to your home, collection point or business depending on the options available in your area.

What are the shipping times?

Shipping times at STR Performance depend on product availability and delivery destination. ✅ Products in stock : dispatch within 24 to 48 working hours after payment validation (excluding weekends and public holidays). 🔄 Products being restocked or personalized : an additional delay may apply (specified on the product sheet or communicated by our customer service). Average delivery times after dispatch : 🇫🇷 Metropolitan France : 1 to 3 working days via Chronopost, Colissimo or DPD 🇪🇺 Europe (Belgium, Luxembourg, Germany, Spain, etc.) : 3 to 7 working days 🌍 DOM-TOM, Canada, Maghreb, and rest of the world : 5 to 12 working days depending on the area Each order benefits from online tracking : you will receive an email with a tracking number as soon as your package is picked up by the carrier. Important : Orders placed after 12 p.m. are generally processed the following business day. Delivery times may be longer during busy periods (sales, promotions, holidays, etc.).

How much are the shipping costs?

Shipping costs are calculated automatically at the checkout stage, based on the weight, volume of your package and your delivery area. We offer several carriers (Chronopost, Colissimo, DPD, UPS) with rates adapted for France, Europe, the French overseas departments and territories and internationally. The exact cost is displayed before payment, once your address has been entered.