shuold i use for the 1000 miles breakin on my new engine ?

 

My Subaru dealer used Shell Helix.
Castrol make some exotic oils for geeks with to much money. The actual grade needed is in your service book

 

Cooking oil.

 

lol ta

 

Motul 300V 5-40 won't do any harm.

 

Is it a new car or a re-built engine?
If the latter and it's had a re-bore/de-glaze and new pistons, don't use anything "better" than a semi-synthetic. A basic mineral oil will allow proper bedding in of the mating parts. As an example, Millers do an oil specifically for running-in. Don't use a full synthetic oil for a few thousand miles, your engine may not bed-in properly at all!
JohnD