2019 Subaru - 439k miles... Nothing but 0w20

At 439K, I would be interested to hear if it just had a con rod break in half, or maybe the bolts just failed? That is a HECK of a run! My butt hurts just thinking about 400 a day, SEVEN DAYS A WEEK!?! I don’t like my occasional 300 mile day!
I was going back to Casper, Wyoming and someone needed a package to go to Cheyenne and FedEx was too high so I dropped it off for 40.00 and got it there next day and it paid for half my fuel costs in my Honda Fit rental car. 850 miles in one day.
 
How can such a thing be? SAE20 is only to save fuel and has the engines destroyed in rows. So at least the eternal lyre of the long-established drivers who only use thick oils. Amazing and once again a great example of how well engines can be designed to drive sae20. The camp game is not all to go deeper and deeper even at hths.
 
How can such a thing be? SAE20 is only to save fuel and has the engines destroyed in rows. So at least the eternal lyre of the long-established drivers who only use thick oils. Amazing and once again a great example of how well engines can be designed to drive sae20. The camp game is not all to go deeper and deeper even at hths.
The original Mobil 1 was a 5W-20, the grade has been around a VERY long time. Whether it's optimal or even appropriate for your application and driving profile is a different discussion. This is why manuals used to have ranges of viscosities before CAFE prohibited them.

Again, you seem all too eager to torpedo the nuance to come to or push a "simple" conclusion, which totally misrepresents the conversation, topic, and everything around it. If that's all you've got to offer on the subject you are going to continue to experience push-back and counters to your statements. I highly recommend some reflection on why that is and a pivot in how you present here.
 
How can such a thing be? SAE20 is only to save fuel and has the engines destroyed in rows. So at least the eternal lyre of the long-established drivers who only use thick oils. Amazing and once again a great example of how well engines can be designed to drive sae20. The camp game is not all to go deeper and deeper even at hths.
Who has claimed that "engines destroyed in rows" is happening. You're getting more ridiculous as time goes on, lol. You still don't get it that engine wear is linked to the oil film thickness that's created from the HTHS viscosity.

One thing that car had going for it due to the use condition is the oil probably never had much fuel dilution, which helped keep the viscosity up over the OCI. It also was mostly highway miles at most likely near the speed limit all the time, which means the engine was just tootling along in high gear at low RPM and low loads. And obviously, the cold start-up and warm-up cycles to total miles used is going to be very low. That's what the engineers who specify low viscosity oil to help meet CAFE goals are counting on. This engine didn't have a typical or anywhere harsh use pattern, and is now used as a "model" for representing low viscosity oil use, which is pretty funny.
 
I don't care how "perfect" the conditions were, this is impressive. Over 400,000 miles is quite a feat for any vehicle and testament to the protective qualities of what many on here refer to as "water thin 0W-20."


I do agree to a point wemay... It's still impressive to a solid degree.

Though like my Nissan Altima VQ with the CVT long highway runs at cruising around 50-80 mph is extremely helpful too. Lowered temps in the transmission especially are very helpful whether it be a CVT or automatic transmission.
 
Boy, that's some crazy mileage in 3 years.
That's around 151 cannonball runs.
It’s easy to rack up miles if you drive for Uber(but those are hard, rough miles) or are a medical courier/hotshot trucker, which can see a lot of highway miles. Toyota and Hyundai have seen members of the million mile club - that million mile Tundra seemed like a hotshot driver, while that Elantra was a medical courier.
 
I do agree to a point wemay... It's still impressive to a solid degree.

Though like my Nissan Altima VQ with the CVT long highway runs at cruising around 50-80 mph is extremely helpful too. Lowered temps in the transmission especially are very helpful whether it be a CVT or automatic transmission.
Do you monitor your cvt temps during interstate cruises? These cvt temps in a July interstate runs might not be what you think.
 
At 439K, I would be interested to hear if it just had a con rod break in half, or maybe the bolts just failed? That is a HECK of a run! My butt hurts just thinking about 400 a day, SEVEN DAYS A WEEK!?! I don’t like my occasional 300 mile day!
Used to drive 600 to 700-mile days, 5 days in a row, to and from Alaska and Iowa -- several times. Only once a year for several years. Did it in a Olds Bravada with a W-code 4.3L and its AWD system. Burned out the O2-sensors a few times... the Al-Can Hwy is a GREAT road! Actually spectacular!

Even though there's very little traffic much of the drive, those butt-in-seat days are probably over.
 
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Do you monitor your cvt temps during interstate cruises? These cvt temps in a July interstate runs might not be what you think.

Been years ago since o looked up a lot of information on that...

There was a guy on the Nissan site who had a ECM reading done going down the road and it was typically 160-170 degrees cruising at highway speeds. In stop and go it was north of 200 degrees and 220 was common.
 
Great. Although it's hard to ignore that other cars last over a million miles in similar highway usage without throwing any rods.
On the other hand - Here is a million mile Subaru Crosstrek.
Interesting read on the Subaru Crosstrek. He does 200K miles a year as a medical courier. Granted he had a new (used) motor installed around the 600K mile mark, still pretty impressive
 
Interesting read on the Subaru Crosstrek. He does 200K miles a year as a medical courier. Granted he had a new (used) motor installed around the 600K mile mark, still pretty impressive
Courier work, with daily ample freeway miles is about as easy as it gets on motor oil.

I say this based upon 4.3 million miles of personal experience

To wit, my 2005 Tacoma 4 cylinder went 750k original miles before being totaled in a wreck.

Subaru's are tanks-great thread.
 
Courier work, with daily ample freeway miles is about as easy as it gets on motor oil.

I say this based upon 4.3 million miles of personal experience

To wit, my 2005 Tacoma 4 cylinder went 750k original miles before being totaled in a wreck.

Subaru's are tanks-great thread.


Those Toyota 2.7L four cylinder motors were great. I had one for a while. It did everything I asked of it.
 
Those Toyota 2.7L four cylinder motors were great. I had one for a while. It did everything I asked of it.
Absolutely.
I predict Toyota will move to a 2.0L Hybrid engine for Tacoma.
This M20A is the new workhorse.
I am sure you know Toyota/Mazda are hoppin' in Huntsville.
 
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