what viscosity does the '04 st take? 10w30 or 10w20?

[Robert Sayre]

I don't have my owners manual with me, what does the trac take? Thanks!

 

[Tim Turner]

10W30

 

[EddieS'04]

5w30..

 

[Marsha Walker]

5w30 summer

5w20 winter

 

[Bret Pardew]

5W-30 in any season

 

[Tom Schindler]

5W20 is not recomended for the 4.0L SOHC engine. IIRC, the oil cap says 5W30.





Tom

 

[Dallas Starr]

5w30... and only 5w30, no matter the weather. check your user manual and your oil cap.

 

[Todd Z]

Yes, 5w30 year round. NOT 5w20

 

[Deleted deleted]

definitely 5w-30.... show me anywhere in the manual where it says to use 5w-20.

 

[Tom Schindler]

Not only that but 5W20 in the winter is not helping a thing.



5W30. When cold, it is a 5 weight oil. When hot, it becomes a 30 weight.



So, with 5W20 oil, when cold it is still a 5 weight oil, but when hot, it is a 20 weight.



No advantage during start up when it is cold. If yu were going from a 10W30 summer to 5W30 in the winter, that is different.





Tom