Drives the CAFE point
Motor Oil Geek on viscosity
- Thread starter FlyingTexan
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If you want it to last, the oil should be reasonalby thick. Also, the oil has to be changed. I do 3.5k OCI on the turbo cars, 5k OCI na cars, 3k motorcycles.
Some people see the manufactures manual as the Bible, and honestly they should be able to, but I think people have fantasy level ideas on R&D departments and how they design things. A lot of it is trial and error and using past collected data. I had the first jeep ecodiesel and it was an amazing engine. I ran Rotella T6 and many, including some here, said I shouldn’t do it. Couple years later after a lot of main bearing failures jeep eventually told everyone to run heavier oils like T6. Tolerances rarely change. Oil specs seem to change a lot.
Yes, we’ve been making engines a long time. So it’s funny when there’s a spec oil change to an engine that’s been around for a long time.
This is the 3rd or 4th post. It’s been discussed ad nauseum. Feel free to participate in one of the pre-existing threads on it.
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Here are ten pages of posts on the topic, that devolved into bickering.
Thread 'Lake Speed Jr video - Ignore Factory oil specifications!'
https://bobistheoilguy.com/forums/t...deo-ignore-factory-oil-specifications.395135/
Thread 'Lake Speed Jr video - Ignore Factory oil specifications!'
https://bobistheoilguy.com/forums/t...deo-ignore-factory-oil-specifications.395135/
Here are seventeen pages of posts on the topic.
Thread 'GM now saying to use 0w40 in 21-24 6.2L'
https://bobistheoilguy.com/forums/threads/gm-now-saying-to-use-0w40-in-21-24-6-2l.394841/
Thread 'GM now saying to use 0w40 in 21-24 6.2L'
https://bobistheoilguy.com/forums/threads/gm-now-saying-to-use-0w40-in-21-24-6-2l.394841/
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