STANT Oil Breather Cap Charger SO-70

( Brand: Stant ), ( Manufacturer Part Number: SO70 ), ( Type: Oil Filler Cap ), ( Vintage Part: Yes ), ( Country Of Origin: United States )

Review STANT Oil Breather Cap Ford Amc Jeep Dodge Charger fits MUSTANG CUDA 1968–1973

The **Stan-Tite SO-70 SO-70 Oil Breather Cap** is a meticulously engineered, high-performance accessory designed to maintain optimal engine health and longevity in classic American muscle cars and rugged off-road vehicles from the late 1960s and early 1970s, including the iconic **1968 1973 Ford Mustang**, **AMC Javelin and AMX**, as well as the legendary **Jeep CJ series**, **Dodge Charger**, **Plymouth Cuda**, and **Barracuda**. Crafted with precision and built to withstand the demands of high-revving V8s, hard-core driving, and the harshest off-road conditions, this breather cap is a game-changer for enthusiasts seeking to preserve their engine s performance and prevent costly internal damage. The SO-70 model stands out with its **SO-70 (Super Oil Separator) technology**, featuring a **multi-stage filtration system** that effectively traps moisture, debris, and carbon particles while allowing clean, dry air to circulate back into the crankcase. This not only reduces oil contamination but also minimizes the risk of sludge buildup, piston ring wear, and valve train corrosion common issues in high-mileage or heavily modified engines. Engineered with a **durable, corrosion-resistant metal housing** and a **sealed rubber gasket**, the Stan-Tite SO-70 ensures a secure, leak-proof fit on a wide range of engine configurations, from the **302 and 351 Cleveland V8s** in Mustangs to the **318 and 360 inline-sixes** in Jeeps and Chargers. Its **universal compatibility** makes it an ideal upgrade for restomod projects, daily drivers, and show cars alike, offering both functionality and aesthetic appeal with its **clean, functional design** that blends seamlessly with the engine bay. Whether you're pushing a Mustang to the limit on the drag strip, tackling rough terrain in a CJ-7, or simply maintaining a beloved classic, the Stan-Tite SO-70 SO-70 Oil Breather Cap is an indispensable component that breathes new life into your engine, ensuring smooth operation and extended reliability for years to come.

### **Pros and Cons of Buying a Stant SO-70 Oil Breather Cap (1968 1973 Ford Mustang, AMC Jeep, Dodge Charger/Cuda)**

#### **Pros**

1. **Improved Engine Breathing** The SO-70 is a high-flow oil breather designed to reduce positive crankcase pressure (PCP) buildup, which can cause oil leaks, valve cover gasket failure, and excessive crankcase pressure. This helps maintain proper lubrication and reduces strain on seals and gaskets.

2. **Prevents Oil Leaks** By allowing excess crankcase gases to escape safely, the SO-70 reduces the risk of oil leaking from gaskets, seals, or the valve cover, which is a common issue in older engines with high mileage.

3. **Extends Engine Life** Proper oil breather function prevents sludge buildup and reduces carbon deposits, helping keep the engine cleaner and more efficient over time.

4. **Easy Installation** The SO-70 is a direct drop-in replacement for the stock oil breather cap, requiring minimal modification. It typically fits without additional hoses or adapters, making it a straightforward upgrade.

5. **Affordable Upgrade** Compared to full crankcase ventilation systems or major engine modifications, the SO-70 is a low-cost solution that provides noticeable benefits without requiring extensive labor.

6. **Works Well with Stock Engines** Since it s designed for these specific applications (Ford 302/351, AMC 304/360, Dodge 318/340/360), it integrates seamlessly without requiring aftermarket modifications.

7. **Reduces Crankcase Pressure Symptoms** If your engine is experiencing ticking, hissing, or oil leaks from the valve cover, the SO-70 can alleviate these issues by properly venting excess pressure.

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#### **Cons**

1. **Not a Complete Solution for Severe Issues** While the SO-70 helps with PCP, it won t fix major engine problems like worn piston rings, failing seals, or internal engine damage. If the engine is already struggling with oil consumption or compression loss, the breather alone won t resolve those issues.

2. **May Require Additional Modifications** In some cases, especially on engines with high mileage or modified intake manifolds, an additional oil catch can or PCP gauge may be needed for optimal performance.

3. **Potential for Oil Loss in Extreme Cases** If the engine is severely worn or the breather is improperly installed, there s a slight risk of oil being drawn into the intake system (though this is rare with the SO-70 s design).

4. **Limited Longevity on Very High-Mileage Engines** On engines with extreme wear (e.g., 300,000 miles), the SO-70 may still struggle if the crankcase is heavily contaminated with sludge or if the engine has internal issues like blown head gaskets.

5. **May Not Be Necessary on Well-Maintained Engines** If the engine is in good condition with proper oil changes and no signs of excessive crankcase pressure, the SO-70 may not provide noticeable benefits.

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### **Conclusion**

The **Stant SO-70 oil breather cap** is a highly effective and practical upgrade for **1968 1973 Ford Mustang, AMC Jeep, and Dodge Charger/Cuda** engines, particularly those showing signs of crankcase pressure issues (oil leaks, valve cover gasket failure, or hissing). It s a simple, affordable fix that can significantly extend the life of your engine by reducing internal stress and preventing common failure points.

However, it s not a cure-all if the engine has underlying mechanical issues (e.g., blown head gaskets, worn pistons, or excessive oil consumption), the SO-70 will only help with ventilation, not the root cause. For engines in good condition, the benefits may be minimal, but for those experiencing PCP-related problems, it s a worthwhile investment.

### **Recommendation**

- Your engine is showing signs of crankcase pressure (oil leaks, valve cover gasket failure, ticking noises).

- You want a simple, low-cost way to improve engine longevity and reduce maintenance issues.

- You re running a stock or mildly modified engine without extreme oil consumption.

- The engine has high mileage with sludge buildup (a crankcase cleaning kit may help).

- You re running a high-performance setup (a PCP gauge or oil catch can may be needed for optimal performance).

For most **1968 1973 muscle cars** with normal wear, the **SO-70 is a smart, cost-effective upgrade** that can save you from costly repairs down the road. If your engine is already in poor condition, address the underlying issues first, but the SO-70 will still provide some protection.

Details:

Fits 1968-1969 Dodge Charger Barracuda Roadrunner and 1968-1973 Ford Mustang Maverick Tiring AMC 1968-1972 AMX Javelin Jeep Wagoneer New Stant SO-70 Oil Filler Breather Cap.

part #: so70 prices

• $15.00-$20.49

specifications emissyste:

• for models: Mustang, Cuda
• for makes: Ford, Amc, Jeep, Dodge
• for years: 1968-1973
• brand: Stant
• mpn: So70
• type: Oil Filler Cap
• vintage part: Yes
• country of origin: United States

seller emissyste:

• rating: 100.0%
• city: Carlton, Oregon
• # reviews: 2959

general emissyste:

• Car Truck Parts Accessories > Exhaust Emission Systems > Other Exhaust Emission Parts
• condition: New

shipping emissyste:

• class: Standard
• type: Calculated
• cost: $8.75
• transit: 3-6 Days
• carrier: USPS
• service: USPS Ground Advantage

returns emissyste:

• paid by: Seller
• policy: Returns Accepted
• time: 30 Days

payments emissyste:

• credit card: Mastercard
• wallet: Google-pay
• other

offer emissyste:

• options: Ship-to-home
• availability: In Stock
• started: May 26, 2026
• sold: 0
• quantity: 1

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