Castrol dino vs syn. ?

[lumpy_grits]

Hi all, it's the "new guy" again. In Castrol's GTX and their syn. in their 5W-30 is there any difference in these oils "cold flow"?
That as in an early morning winter start(15 degrees F. above 0).
Thanks for your time.
Respectfully,
LG

 

[JohnBrowning]

Go to Castrol and look up their white papers for those oils and it will tell you.

 

[Drivebelt]

Synthetic vs conventional 5W-30 isn't really going to make any appreciable difference at temperatures of 15F.

I use conventional 5W-30 here in -30C (-22F) in the winter. Sure, a synthetic 5W-30 would be a little better at that temperature, but 5W-30 conventionals work.

 

[lumpy_grits]

Hi JB, what are "white papers"?
Respectfully,
LG

 

[02zx9r]

Technical specs

 

[lumpy_grits]

THX 02, are those "white sheets" in "english" or written in "engineer speak"? I looked at the Castrol USA site and I'm not sure what they call that information. Besides I like to get feedback from the "field".
Respectfully,
LG

 

[Brett Miller]

Castrol's data sheets stink. The only list the minimum specs for the oil, not actual measurements. I think they formulate their oils to meet the bare minimum and no more.

 

[mechtech2]

It's not worth looking up, unless you are going to live in the Arctic/Antarctic.