Millers Oils CRX LS NT+ Nanodrive 75W140 Limited Slip Gear Oil - 5L - 7970-5L

Millers Oils CRX LS NT+ is a heavy duty 75W140 fully synthetic gear oil with friction modifiers de...

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Product Information

Full details

The Millers Oils CRX LS NT+ 75W140 is a high-performance, fully synthetic gear oil engineered for professional racers and automotive enthusiasts who demand maximum protection in high-stress manual transmissions and limited-slip differentials. By integrating proprietary Nanodrive technology, this oil significantly reduces friction and operating temperatures, though it should be noted that its specialized heavy-duty formulation is optimized for competition use rather than standard daily commuter vehicles.

All features

Model Part Number7970-5L
BrandMillers Oils

Extended Product Information

FAQs

Can I use this in my daily driver?

While it can be used in street cars, its heavy-duty properties are optimized for competition and high-performance use; standard synthetic oils may be more cost-effective for daily driving.

Is this safe for synchronizers in manual transmissions?

Yes, it is suitable for many high-performance manual transmissions requiring GL-4 or GL-5, but always verify your manufacturer's specific synchronization requirements.

Does this require extra LSD additive?

No, this oil already contains the necessary friction modifiers to manage limited-slip differential performance.

What is the shelf life of this oil?

When stored in a sealed container in a stable environment, the oil remains effective for several years, though it is best to use within 5 years of the manufacture date.

Can I mix this with other brands?

It is not recommended to mix different brands or formulations, as this can degrade the specific benefits of the Nanodrive additive package.

Troubleshooting

Increased gear stiffness in sub-zero temperatures

While this oil has good cold flow properties, it is a 75W140; ensure your transmission design specifically allows for this viscosity in extreme cold climates.

Ongoing chatter in LSD despite new fluid

Verify that the differential clutch plates are not worn beyond their service limit, as oil cannot fix mechanical component failure.

Pros and Cons

Pros

  • Significantly reduces power loss through friction reduction
  • Eliminates chatter in limited-slip differentials
  • Provides superior thermal stability under extreme race conditions
  • Excellent protection for heavy-duty competition components

Cons

  • Higher cost than standard mineral or semi-synthetic gear oils
  • Over-engineered for basic street passenger vehicles
  • May be too thick for transmissions requiring thinner viscosity oils

Setup, Compatibility & Care

Ensure your vehicle's service manual specifies a 75W140 viscosity grade before installation. To perform a fluid change: 1. Ensure the transmission or differential is at operating temperature to allow for easier draining. 2. Safely lift the vehicle and locate the drain and fill plugs. 3. Drain the old fluid into a suitable container and replace the drain plug. 4. Fill the unit with the Millers Oils CRX LS NT+ until the fluid reaches the fill hole level. 5. Properly dispose of waste oil at an authorized recycling center. Store the container in a cool, dry place away from direct sunlight to maintain the integrity of the nanoparticle additives.

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