Is 5w20 Dexos becoming obsolete?

[Merek]

Yep you summed it all up, quite frankly it happens a lot with changes to model years and oil viscosity changes and even moreso when it's the same engine that is used overseas, mostly due to the enviroment it's being used in.

 

[kschachn]

Yep you summed it all up, quite frankly it happens a lot with changes to model years and oil viscosity changes and even moreso when it's the same engine that is used overseas, mostly due to the enviroment it's being used in.

And yet these are both 20-grade oils.

 

[HouseTiger]

Yep - we were not related.

I wouldn't be so quick to blame George III for the loss of America. His prime minister, Frederick North ( 2d Earl of Guilford for anyone who cares )
seemed to spend more of his attention and energy to administering the Exchequer (Treasury) and dealing with the House of Commons. Seems his indifference to the Colonial rebellion got in the way of effective management of the crisis at hand. He totally neglected his role in directing the war effort against the American Colonies and at the same time managed to keep George III totally in the dark as to what was really going on.

Personally, I'm grateful to Freddy North for his sloth, otherwise we'd be flying the Union Jack, singing God Save King Chucky the Threeth, and would be in as sad a shape as the rest of the Commonwealth.

 

[CR94]

And yet these are both 20-grade oils.

That doesn't mean they'll necessarily have the same volatility or VII concentration, though.

 

[Nesterenko]

I wouldn't be so quick to blame George III for the loss of America. His prime minister, Frederick North ( 2d Earl of Guilford for anyone who cares )
seemed to spend more of his attention and energy to administering the Exchequer (Treasury) and dealing with the House of Commons. Seems his indifference to the Colonial rebellion got in the way of effective management of the crisis at hand. He totally neglected his role in directing the war effort against the American Colonies and at the same time managed to keep George III totally in the dark as to what was really going on.

Personally, I'm grateful to Freddy North for his sloth, otherwise we'd be flying the Union Jack, singing God Save King Chucky the Threeth, and would be in as sad a shape as the rest of the Commonwealth.

That's a pot and kettle situation. You know what I mean.

 

[Cuemark8]

GM dropped there Dexos rating on 5W-20 oils. It's not worth it.
Pretty much anything and everything about OW-20 oil supercedes the specifications of a 5W-20 oil.

Any OW-20 oil can be use in place of a 5W-20 oil.

GM dropped the Dexos rating because it's wasted time and effort to do continue with R&D and engineering to develope a DEXOS rating.
I would be leaning on the fence as synthetic oils seem to dominate anymore that 5W-20 may very well go away some day.

Ford seems to be about the only major auto manufacturer hanging on to 5W-20 specs. Although they allow the use of 0W-20 oils and suggest it's use in extreme cold.

Oil manufacturers like Mobil 1 say right on the bottle that their 0W-20 can be used anywhere and API 5W-20 is called for.