Differences Between Rotella T6 5W40 Vs 15W40

Reviewed By: Joses Peter

Looking for a quality motor oil that will protect your engine? You have likely come across Rotella T6 5W40 and Rotella T6 15W40 comparison. These two oils are very popular among drivers and mechanics alike, but what are the differences between them?

In this blog post, I’ll take a look at the key similarities and differences between Rotella T6 5W40 Vs 15W40. We’ll also discuss which oil is right for your vehicle.

Overview Of Rotella T6 5W40?

Shell ROTELLA® T6 5W-40 Full Synthetic Heavy Duty Engine Oil is designed to provide all the protection you need and more. It meets and exceeds API CK-4 performance standards, and offers better fuel economy and improved wear performance.

The advanced multi-functional dispersant additives in the oil help protect against the effects of soot, dirt, and other contaminants, and the oil also provides excellent oxidation resistance and low-temperature flow. Additionally, the oil is compatible with emissions systems and has outstanding shear stability.

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Overview Of Rotella T6 15W40

Shell Rotella T6 15W-40 is a full synthetic heavy-duty diesel engine oil that is designed to provide improved performance compared to conventional and semi-synthetic Rotella 15W-40 products. Shell Rotella T6 15W-40 is suitable for virtually all modern low-emission heavy duty engines and older hard-working diesel engines.

With its wide range of specifications and approvals from many of the world’s leading engine makers, Shell Rotella T6 15W-40 is an excellent choice for on-highway fleets, general haul, construction, agriculture, and public-transport operators, and diesel pick-up trucks.

The T6 15W-40 is designed to deliver improved wear protection, increased protection against oxidation, enhanced deposit control/cleanliness, better low-temperature flow and excellent corrosion control compared to conventional and synthetic blend Shell Rotella 15W-40 products.

This product also provides better cold cranking properties and low-temperature pumpability at -15C compared to conventional and synthetic blend Shell Rotella 15W-40 products.

In API industry wear tests, Shell Rotella T6 15W-40 didn’t just meet CK-4 specs, it demonstrated an 85% improvement in copper corrosion protection and 98% improvement in lead corrosion protection than required, an average of 50% more wear protection than required. Shell Rotella T6 15W-40 also provides lower oil volatility in the Noack test compared to conventional Shell Rotella T4 15W-40, which means that it provides excellent oil consumption control.

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Rotella T6 5W40 Vs 15W40

So, what are the key differences between Rotella T 15W40 and Rotella T 50? The main difference is that Rotella T 50 is a heavier-weight oil, meaning it will provide more protection for your engine at high temperatures. Rotella T 50 is also a bit more expensive than Rotella T 15W-40. So, if you’re looking for the best possible protection for your engine, Rotella T 50 is the way to go. However, if you’re on a budget, Rotella T 15W-40 will still provide good protection for your engine.

Let’s compare them more in terms of their features, functionalities, and benefits.

Reduce Camshaft Friction

The key difference between Rotella T 15W40 and Rotella T 50 is that Rotella T 50 has an additive that helps to reduce camshaft friction. This can lead to better fuel economy and performance, especially in high-performance engines. If you’re looking for the best possible performance from your engine, Rotella T 50 is the way to go. However, if you’re just looking for good protection and don’t care about performance, Rotella T 15W-40 will still do the job.

Performance in Cold Weather

Another difference between Rotella T 15W40 and Rotella T 50 is that Rotella T 50 performs better in cold weather. If you live in an area with cold winters, Rotella T 50 is the way to go. However, if you live in a warmer climate, Rotella T 15W-40 will still provide good protection for your engine.

Shear Stability

One final difference between Rotella T 15W40 and Rotella T 50 is that Rotella T 50 has better shear stability. This means that it will maintain its viscosity better over time, providing better protection for your engine. Rotella T 50 is the way to go if you’re looking for the best possible protection for your engine. However, if you’re on a budget, Rotella T 15W-40 will still provide good protection.

So, there you have it! The key differences between Rotella T 15W40 and Rotella T 50. If you’re looking for the best possible protection for your engine, Rotella T 50 is the way to go.

Final Words

There is no clear consensus on which oil is better for your car – Rotella T6 5W40 or 15W40. It really depends on your specific car model and what the manufacturer recommends. If you are unsure, it is always best to consult your car’s owner manual or a professional mechanic.

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