Originally Posted By: built
I didn't know the conventional oil went to cj-4 that long ago, I found some 15w40 old type bottles at a truck stop for 16 bucks a gallon and wanted to make sure of what it was.
I can't find any rotella T 10w30 oil anywhere.
Not even the syn around here.
what can i check on these older bottles to know if it's real old stock ?
I wouldn't pay $16 a gallon for a 15w-40, no matter what it is.
Rotella 10w-30 has very limited availablity. Anyway, the difference between the two weights is minor.
If the weather gets that cold where you live use something else.
By the way, unless you're wanted by the law or something it would help to mention your location in the info box, "USA" is kind of vague.
Shell Oil bottles usually have a date code stamped on them somewhere.