Are 0w20 and 5w20 100% interchangeable?

[ka9mnx]

Originally Posted by NH73
I would say no. Can you use a 0w20 in place of 5w20? Most cases yes. Vice versa? Only if the 5w20 was synthetic in a warmer climate.

Why would you say that? They are both 20 grade at operating temperature.

 

[NH73]

Originally Posted by ka9mnx
Originally Posted by NH73
I would say no. Can you use a 0w20 in place of 5w20? Most cases yes. Vice versa? Only if the 5w20 was synthetic in a warmer climate.

Why would you say that? They are both 20 grade at operating temperature.
When an owners manual calls for 5w20, usually conventional oil will suffice. Using any 0w20 will be higher quality than a conventional 5w20. If a owners manual calls for 0w20, then your vehicle is calling for a higher quality oil than conventional 5w20.

 

[Toh1]

5w20 full syn =0w20 if you leave in hotter climate or never go below 0f my 2 cents but no data to back up just opinion after reading from here