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95-6040F Gallon Synthetic Manual Transmission Oil SH550063250KK 75W-80

Sh550063250kk International 95-6040f 5 Gallon 75w-80 Synthetic Manual Transmission Oil

( Brand: International ), ( Manufacturer Part Number: 95-6040F ), ( Part Type: Oil Manual Transmission ), ( Unit Type: Unit ), ( Oil Viscosity: 75w 80 ), ( Volume: 5 Gallons ), ( California Prop 65 Warning: Warning This Product May Contain Chemicals Known To The State Of California To Cause Cancer, Birth Defects Or Other Reproductive Harm. Learn More At P65warnings.ca.gov )

Review INTERNATIONAL Gallon 75w-80 Synthetic Manual Transmission Oil

The **International 95-6040F SH550063250KK 75W-80 Synthetic Manual Transmission Oil** is a high-performance, full-synthetic lubricant meticulously engineered to deliver superior protection, extended service life, and optimal performance for heavy-duty manual transmissions in commercial and industrial applications. Formulated with advanced synthetic base stocks and a premium additive package, this oil ensures exceptional resistance to oxidation, thermal breakdown, and shear stability, even under the most demanding operating conditions. Its 75W-80 viscosity rating provides a balanced flow at both cold starts and high operating temperatures, ensuring smooth gear engagement, reduced wear, and enhanced efficiency in a wide range of climates from freezing winter mornings to scorching summer highways. Ideal for use in International Harvester and Navistar trucks, as well as other heavy-duty vehicles equipped with manual transmissions, this oil meets or exceeds industry standards for durability and performance, including API GL-5 and SAE J306 specifications. The synthetic formulation minimizes foaming, prevents sludge buildup, and reduces energy loss due to friction, contributing to improved fuel economy and prolonged transmission longevity. Whether deployed in long-haul freight, construction, or agricultural settings, this oil s robust formulation helps maintain peak transmission health, reducing the risk of premature failure and costly repairs. Its compatibility with a variety of seals and materials further ensures reliable operation across diverse fleets, making it a trusted choice for operators seeking long-term reliability and performance in their manual transmissions.

### **Pros and Cons of Buying International 95-6040F SH550063250KK (75W-80 Synthetic Manual Transmission Oil)**

#### **Pros:**

1. **Synthetic Blend Formula** Offers improved wear protection, better thermal stability, and extended drain intervals compared to conventional oils, reducing the risk of transmission damage over time.

2. **API Approved** Meets API GL-4 and GL-5 standards, ensuring compatibility with most manual transmissions, including those in older vehicles (e.g., International Harvester, Ford, GM, and other heavy-duty applications).

3. **High Viscosity (75W-80)** Provides adequate lubrication in a wide temperature range, reducing friction and preventing metal-to-metal contact, which is crucial for manual transmissions operating under varying conditions.

4. **Compatibility with Older Vehicles** Designed for use in legacy manual transmissions (e.g., those from the 1990s and earlier), where synthetic options may be limited.

5. **Extended Service Life** Synthetic additives help reduce sludge buildup and oxidation, potentially extending the life of the transmission fluid and internal components.

6. **Available in Standard Bottles** Comes in a 1-quart (32 oz) container, making it convenient for top-offs or partial changes without requiring large quantities.

7. **Cost-Effective for Basic Needs** While not as premium as full synthetic, it offers a balance between performance and affordability for standard manual transmissions.

#### **Cons:**

1. **Not a Full Synthetic** A synthetic blend means it contains some conventional oil, which may not provide the same level of extreme protection as a full synthetic (e.g., Dexron, Mercon, or high-performance manual transmission fluids).

2. **Limited Modern Compatibility** Some newer transmissions (especially those requiring **API GL-5** or **M2C219** specifications) may not fully benefit from this blend, and using it could void warranties or cause premature wear.

3. **Potential for Incompatibility with Certain Additives** If the transmission already contains specialized additives (e.g., friction modifiers for clutch performance), mixing them with this oil could lead to performance issues.

4. **No OEM-Specific Formulation** Unlike OEM-recommended fluids (e.g., Ford M2C219, GM Dexron, or Cummins CES), this is a generic option that may not optimize clutch engagement or synchro performance in high-demand applications.

5. **Shorter Drain Intervals Compared to Full Synthetic** While better than conventional oil, synthetic blends still require more frequent changes than full synthetic fluids in some cases.

6. **Risk of Contamination** If mixed with other fluids (e.g., automatic transmission fluid, gear oil, or diesel engine oil), it could degrade performance or cause internal damage.

7. **Limited Availability of Larger Quantities** The 1-quart size may not be sufficient for a full transmission flush in larger vehicles, requiring multiple purchases.

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### **Conclusion**

The **International 95-6040F SH550063250KK (75W-80 Synthetic Blend Manual Transmission Oil)** is a **decent, budget-friendly option** for **older manual transmissions** where synthetic protection is desired but full synthetic is unnecessary. It provides **better wear resistance and thermal stability** than conventional oil, making it suitable for **light-duty to moderate-use vehicles** (e.g., pickup trucks, older SUVs, or agricultural equipment).

However, it is **not ideal for modern transmissions** that require **specific API GL-5 or OEM-approved fluids**, as it may lack the necessary additives for clutch performance and synchro longevity. If the transmission is **high-mileage, heavily loaded, or part of a newer vehicle**, a **full synthetic manual transmission oil (e.g., Mobil 1, Pennzoil Synthetic, or OEM-recommended fluid)** would be a better long-term investment.

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### **Recommendation**

- **Buy this oil if:**

- You have an **older manual transmission** (pre-2000s) that doesn t specify a particular fluid type.

- You want **better protection than conventional oil** without the cost of full synthetic.

- You re doing a **top-off or partial change** in a vehicle where mixing with existing fluid is acceptable.

- **Avoid this oil if:**

- Your transmission requires a **specific OEM fluid** (check the owner s manual or service manual).

- You re working on a **modern vehicle** (post-2000s) with **clutch or synchro issues**, as it may not provide optimal friction characteristics.

- You plan to **fully flush the transmission** consider a **larger quantity of a more specialized fluid** (e.g., **Mobil 1 Synthetic Manual Transmission Fluid** or **Liqui Moly Top Tec ATF** for GL-4/5 compatibility).

- **Best Alternatives:**

- For **older vehicles:** **Mobil 1 Synthetic Manual Transmission Fluid (75W-90 or 80W-90)** or **Castrol Syntrans Transaxle Fluid (GL-4/GL-5)**.

- For **modern vehicles:** **OEM-recommended fluid** (e.g., **Ford M2C219, GM Dexron, or Cummins CES**).

- For **heavy-duty or high-performance applications:** **Liqui Moly Top Tec ATF or Pennzoil Synthetic Manual Transmission Fluid**.

If in doubt, **consult the vehicle s service manual** or a **transmission specialist** to confirm the correct fluid specification before purchasing.

Details:

I do throw away parts would not recommend using. Some may even have slight scratches, fingerprints or minor surface rust. The more presentable the filters and parts look Offer. Use the pictures shown as a help in determining if this part is right for you.

If any part has rust, dings or pieces missing, I will inform you and show pictures. Some parts may have OE boxes, hardware,or plastic wrap missing.

part #: 956040f price

  • $117.99

specifications automobilefluids:

  • brand: International
  • mpn: 95-6040f
  • part type: Oil Manual Transmission
  • unit type: Unit
  • oil viscosity: 75w 80
  • volume: 5 Gallons
  • california prop 65 warning: Warning This Product May Contain Chemicals Known To The State Of California To Cause Cancer, Birth Defects Or Other Reproductive Harm. Learn More At P65warnings.ca.gov

seller automobilefluids:

  • city: Warrenton, Missouri
  • rating: 99.0%
  • # reviews: 154

general automobilefluids:

  • Automotive Tools Supplies > Fluids Chemicals > Gear/Differential Oil
  • condition: New

shipping automobilefluids:

  • cost: $81.90
  • carrier: USPS, UPS, FedEx
  • class: Standard, Economy
  • service: USPS Ground Advantage, UPS Ground Saver, FedEx Ground Economy
  • type: Calculated
  • transit: 5-11 Days

returns automobilefluids:

  • policy: Returns Accepted
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offer automobilefluids:

  • sold: 0
  • availability: In Stock
  • started: February 28, 2026
  • options: Ship-to-home
  • quantity: 2
part type: oil manual transmission, unit type: unit, oil viscosity: 75w 80, volume: 5 gallons, california prop 65 warning: warning this product may contain chemicals known to the state of california to cause cancer, birth defects or other reproductive harm. learn more at p65warnings.ca.gov,
category: auto parts > tools supplies > fluids chemicals > gear/differential oil, sku: 11789302051280731,
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  • New. Offer #1 priced at $117.99 + $88.45 shipping estimate = $206.44* total. If any part has any rust, dings or pieces missing, I will inform you and show pictures.+$88.45 shipping

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