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Toyota’s third-generation Tundra was supposed to be the future, more power, better MPG, and modern engineering. Instead, we’re seeing engine failures, spun bearings, short-block replacements, and even brand-new crate engines failing with shockingly low mileage.

So what’s really going on?
In this video, I break down a theory that challenges one of the most common explanations you’ll hear online:

“Tighter tolerances are killing modern engines.”

What if that’s completely backwards?

After reviewing teardown data, owner reports, oil pressure logs, and comparing the new V35A twin-turbo V6 to Toyota’s legendary 5.7L 3UR-FE, a very different picture starts to form.

In this video, we cover:
Why the V35A actually has larger main and rod bearing clearances than the old 5.7L
How an undersquare, high-torque, twin-turbo design increases bearing load at low RPM

Why 0W-20 oil may not provide enough film strength for this engine

Real owner data showing oil pressure as low as 4 PSI at warm idle

How variable oil pumps may be prioritizing MPG over engine longevity

Why Ford abandoned 5W-20 in the EcoBoost

Why most European turbo engines run 0W-30 or 0W-40

And why thicker oil might be a safer long-term choice for these engines

This isn’t about brand bashing, it’s about understanding how EPA, CAFE standards, oil viscosity, and oil pressure mapping may be combining to create a perfect storm for bearing wear.

Disclaimer:
I’m not telling you what oil to run. I’m not a mechanic. This is not warranty advice. This is an analysis based on publicly available data, owner reports, and engineering fundamentals, and what I would consider if I owned one of these trucks.

If you own a Toyota Tundra, Sequoia, Lexus variant with the V35A, or even a Ram Hurricane or EcoBoost truck, this conversation matters.

Let me know in the comments:

Would you give up a little MPG for engine longevity?

Have you logged oil pressure on your truck?

Have you experienced bearing or knock issues?

Share this with a Tundra owner before it’s too late

Thanks for watching
see you next time.