Morris AG250 Classic Gear Oil - SAE 250 - 1L
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Product Information
Full details
The Morris AG250 Classic Gear Oil - SAE 250 is designed for owners of classic and vintage vehicles needing a reliable, non-EP (Extreme Pressure) lubricant for manual gearboxes, axles, and other specific drivetrain components. Its key benefit is providing excellent natural film strength and long-term stability without the harshness of EP additives, protecting sensitive components like phosphor-bronze. A caveat is that it's not suitable for modern equipment requiring EP additives.
All features
| Model Part Number | AG250 |
|---|---|
| Brand | Morris Lubricants |
Extended Product Information
FAQs
What does 'non-EP' mean for gear oil?
Non-EP (Extreme Pressure) means the lubricant does not contain additives designed to form a protective film under very high pressure and shock loads. This makes it safer for older transmissions with yellow metals like phosphor-bronze, which can be corroded by EP additives.
Can I use AG250 in a modern manual gearbox?
Generally, no. Modern gearboxes often require EP additives (specified as API GL4 or GL5) for optimal protection. AG250 is specifically formulated for older applications that do not require or can be damaged by these additives.
What is the difference between SAE 250 and other SAE grades?
SAE 250 is a very thick viscosity grade. Lower numbers (e.g., SAE 80, SAE 90) indicate thinner oils. AG250's high viscosity is suitable for applications requiring substantial cushioning and load-bearing capacity, typical of some older heavy-duty or specialized gear systems.
How often should I change AG250 gear oil?
Consult your vehicle's service manual for the recommended service interval. Factors like mileage, operating conditions, and usage frequency will influence this. Due to its stability, intervals may be longer than for some other lubricants, but regular checks are still advised.
Is AG250 suitable for limited-slip differentials?
No, AG250 is not designed for limited-slip differentials. Those applications typically require specialized friction modifiers and often different API specifications.
Where can I find the viscosity specifications for my vehicle?
The most reliable source is your vehicle's original owner's manual or service manual. It will specify the required SAE grade and API service classification for the gearbox, axle, or other component.
Troubleshooting
Gear changes feel stiff or notchy.
Ensure the correct viscosity (SAE 250) is specified for your application. If it is, and the issue persists after ensuring the correct fill level, it might indicate wear within the gearbox itself rather than an oil issue. Consult your vehicle's service manual or a specialist.
Oil appears to be leaking from seals.
Verify that the seals are in good condition. The high viscosity of AG250 can sometimes highlight existing seal weaknesses. If seals are compromised, they will need replacement. Ensure correct fill levels are maintained; overfilling can exacerbate leaks.
Excessive foaming observed in the gearbox.
While AG250 has good anti-foam properties, excessive foaming can occur if the oil is contaminated or if there is excessive churning due to incorrect fill levels or internal component issues. Check fill levels and ensure no contaminants are present. If the problem persists, consult a technician.
Pros and Cons
Pros
- Specifically formulated for classic and vintage vehicle transmissions.
- Safe for sensitive materials like phosphor-bronze.
- Provides good inherent lubrication without EP additives.
- Offers excellent long-term stability.
- Good resistance to foaming.
Cons
- Not suitable for modern equipment requiring EP additives.
- SAE 250 viscosity is very thick and may not be suitable for all applications.
- Requires careful application to avoid over-lubrication due to viscosity.
- Limited availability compared to mainstream gear oils.
Setup, Compatibility & Care
Compatibility: This gear oil is specifically recommended for equipment that calls for a non-EP lubricant, such as API GL1. It is safe for transmissions containing phosphor-bronze components and is ideal for classic and vintage vehicles. It is *not* suitable for applications requiring EP additives (e.g., API GL4 or GL5 specifications).
Setup: Ensure the equipment's lubrication system is clean before filling. Drain old oil completely. Using a suitable funnel and ensuring the vehicle is on a level surface, carefully fill the gearbox or axle to the manufacturer's specified level. Due to its high viscosity (SAE 250), it may require slightly more effort to fill than thinner oils. Always refer to your vehicle's service manual for the correct fill procedure and quantity.
Care: Store the oil in its original, sealed container in a cool, dry place away from direct sunlight. Regularly check lubrication levels as per your vehicle's maintenance schedule. While AG250 offers long-term stability, adhering to recommended service intervals for oil changes, as outlined in your vehicle's manual, is crucial for optimal performance and component protection.