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re: Is 0w20 really what is best for our vehicles?

Posted on 7/22/23 at 6:21 pm to
Posted by AndyCBR
Baton Rouge, LA
Member since Nov 2012
7563 posts
Posted on 7/22/23 at 6:21 pm to
If the engine is designed for 0w-20 you are fine and the bearing clearances are designed for that viscosity.

With that said I would not do the 10k mile service intervals as suggested by many manufacturers. The cost benefit of skipping oil changes at 5k is just not worth it and many newer engines are sensitive to wear from dirty oil.
Posted by Clames
Member since Oct 2010
16640 posts
Posted on 7/22/23 at 7:09 pm to
quote:

the bearing clearances are designed for that viscosity.


No they aren't. Bearing/ring clearances are chosen for thermal expansion and the dimensions of the parts involved. Honda Civic will spec 0W20 here but 5W40 in the EU for the exact same engine, nothing to do with bearing clearances.
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