Is 0W20 bad for your engine? Million Mile Tundra example

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February 1, 2025
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9 comments
Is 0W20 bad for your engine? Million Mile Tundra example

Spend time in any online community with truck fans and you’ll undoubtedly come across posts on: is OW20 bad for your engine? And should you follow the recommended oil change intervals? The Million Mile Tundra reveals interesting data on this topic.

OW20 bad for your engine?

Before we get into what the Million Mile Tundra revealed, let’s talk about the concerns over OW20.

Throughout the last few decades, oil manufacturers and automakers have worked hand-in-hand to develop new oils to protect engines from wear damage and improve fuel economy.

This push has led to lighter weight oils that are so thin, they look more like water than oil. 

Naturally, this has led to a considerable amount of skepticism on how such a thin oil can protect your engine. This dramatic change from the heavier, thicker weight oils of the past which more resembled the perception on how oil looks has caused many to disregard the oil recommendations from the manufacturer. 

Instead, they propose using heavier oil and shorter intervals to better protect the engine.

Million Mile Tundra oil type and intervals

While skeptics will point to engine failures posted in online communities as often being linked to oil types, there is a famous engine that has lasted and bucks this trend.

Vic Sheppard, the man who put a million miles on a 2007 Tundra with the 4.6L V-8, is about to do it again on a 2014 Toyota Tundra with the 5.7L V-8 engine. 

Million mile trucks are often seen as the example to follow if you want to make your engine last. 

This raises the question on what oil he used and how often he changed it. Follow his example, the thinking goes, and your engine will last just as long. 

Through a text message, Sheppard said he uses OW20 in his truck and he follows the manufacturers recommended oil change intervals of 10,000 miles.  

Our take

Million mile trucks are worked hard and in Sheppard’s case he does a considerable amount of highway driving while hauling heavy equipment. Examples like his, may not sway most, it is good to know a truck following the manufacturer’s recommendation for maintenance can hold up over the long run.

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testerdahl

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2,716 messages 4,601 likes

Spend time in any online community with truck fans and you’ll undoubtedly come across posts on: is OW20 bad for your engine? And should you follow the recommended oil change intervals? The Million Mile Tundra reveals interesting data on this topic. OW20 bad for your engine? Before we get into what the Million Mile Tundra revealed, let’s talk about the concerns over OW20. Throughout the last few decades, oil manufacturers and automakers have worked hand-in-hand to develop new oils to protect engines from wear damage and improve fuel economy. This push has led to lighter weight oils that are so […] (read full article...)

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Dusdaddy

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1,355 messages 2,020 likes

What!? How can that be? Some of these guys on the user forums have driven hundreds of miles on these trucks, so how can they be wrong? And they actually can "feel" how much more power and smoothness thicker oil provides......🙄

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James-kd2cm

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222 messages 406 likes

What!? How can that be? Some of these guys on the user forums have driven hundreds of miles on these trucks, so how can they be wrong? And they actually can "feel" how much more power and smoothness thicker oil provides......🙄

That’s too funny. You mean to say a self proclaimed expert isn’t always right? I won’t be able to believe anything said at a bar again (Including what I say).

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Dusdaddy

Well-known member

1,355 messages 2,020 likes

That’s too funny. You mean to say a self proclaimed expert isn’t always right? I won’t be able to believe anything said at a bar again (Including what I say).

lol...yep, I'm definitely guilty of it as well. Never afraid to learn.

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testerdahl

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2,716 messages 4,601 likes

The idea for this story came from a viewer. His words were: "if Vic used 0W20 that pretty much puts things to rest. That information would certainly stop some of the YouTube Mechanics lol"

Happy to help stop some of the YouTube mechanics. LOL

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TheDo114

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The idea for this story came from a viewer. His words were: "if Vic used 0W20 that pretty much puts things to rest. That information would certainly stop some of the YouTube Mechanics lol"

Happy to help stop some of the YouTube mechanics. LOL

I'd say prepare for people to say that the exception does not make the norm. I still trust engineers over joe schmuck mechanic.

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testerdahl

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2,716 messages 4,601 likes

I'd say prepare for people to say that the exception does not make the norm. I still trust engineers over joe schmuck mechanic.

I don't reply back to those comments. There's such a negative viewpoint these days it is ridiculous. People think all new trucks are crap and built to fail, dealerships are the enemy, etc... With that viewpoint, it isn't worth wasting energy on them.

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Dusdaddy

Well-known member

1,355 messages 2,020 likes

The idea for this story came from a viewer. His words were: "if Vic used 0W20 that pretty much puts things to rest. That information would certainly stop some of the YouTube Mechanics lol"

Happy to help stop some of the YouTube mechanics. LOL

And now when I see any commenter whining how 0W20 will kill an engine, I have something to refer them to.

Now go find somebody who put a million miles on a turbo so we can shut them up as well. Preferably a 2023/24 Tundra that was not part of the recall to end that argument as well.

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testerdahl

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2,716 messages 4,601 likes

Now go find somebody who put a million miles on a turbo so we can shut them up as well. Preferably a 2023/24 Tundra that was not part of the recall to end that argument as well.

I work on this all the time.

Actually, I could REALLY use everyone's help. Go to Ford F-150 forums and see if someone has one. My thinking is since the EcoBoost came out in 2009, there has to be one out there.

I've searched and come up with nothing.

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TheDo114

Well-known member

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I work on this all the time.

Actually, I could REALLY use everyone's help. Go to Ford F-150 forums and see if someone has one. My thinking is since the EcoBoost came out in 2009, there has to be one out there.

I've searched and come up with nothing.

500 000 - 600 000 miles seems to be the upper limit I found for an original engine Ecoboost. There's a couple of one million miles Ecoboost out there, but they had an engine replacement along the way.

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