Had an 03 forester with 350k on the motor. The frame rusted out, dropped the motor into a different forester and kept going. Ran 0w20 it's entire life from 5 miles new.
Is the recommended 0-20 bad for engine life?
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No way to look at the oil temps in a Silverado half-ton-at least in a 2018 that I had. Transmission temps were usually about 100 degrees over ambient temperature-but would cool right back down on the downhill side.
Gets hot here in the summertime in Utah-over heating when towing was a nonissue.
But they still protect. So what's your concern? The (0W/20) oil has been around a long time now-anecdotal evidence suggest no harm to motors.
Now I know who the voice actor for Old Beavis is.
"Hey Beavis, we're gonna score!"
Triple_Se7en
$50 Site Donor 2024
Never repaired or exchanged an engine internal for 350k?
Altima 255k
Forte 210k
2018 Caravan 34800
Neither had engine opened up. Louisiana heat and Altima was used for Door Dash.
Forte 210k
2018 Caravan 34800
Neither had engine opened up. Louisiana heat and Altima was used for Door Dash.
Accept it and move on.
A 0w-20 with an HTHS > 3.2 would peak my interest. Protection is NOT about the grade.
Where did you buy 0w20 in 2002?
Yeah that's a bit of a stretch. Perhaps just trying to make a point of some sort. It seems as though sometimes people want to brag about how thin of an oil they use.
I’m feeling attacked.
No, if this is the manufacturer's recommendation, period.
Boooooooring question, btw. A thousand times asked, twentythousand times answered.
The actual question is:
WHY does every forum member need another own thread for the ever same question?
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But that's exactly the case. The fact that they also provide acceptable engine life is almost a by-product or side effect.
This has been the case ever since they switched to 5w-xx oils back in the 90s/00s. They were specifically chosen for boosting fleet milage averages.
Old coworker has almost 170K on a 06 Fit on nothing but 0W-20 and 5W-20. Hondas regularly hit 100K and above on 0W-20, so do many Toyotas as an anecdote.
On an engine made for “thin” oils, a bit more attention has to made to the bearing surfaces. Which is why I have no problem using 0W-20 on a Japanese engine for the most part. Hearing about GM LS/LT-based truck engines and Hemis with AFM/DOD on 0W-20 with wiped lifters and cams makes me think the engine needs to be designed for it.
On an engine made for “thin” oils, a bit more attention has to made to the bearing surfaces. Which is why I have no problem using 0W-20 on a Japanese engine for the most part. Hearing about GM LS/LT-based truck engines and Hemis with AFM/DOD on 0W-20 with wiped lifters and cams makes me think the engine needs to be designed for it.
Why, does it have a lower specific heat?
That's not it.
It depends on the engine and driving conditions 
For example, I wouldn't use 0w20 in a turbo
But in most modern non-Euro NA cars, 0w20 is just fine.
For example, I wouldn't use 0w20 in a turbo
But in most modern non-Euro NA cars, 0w20 is just fine.
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