....
K K K K K KLOTZ!...
Ahhhhhhh,....
Now now Serro -- no cursing out loud on the list you know -- bad form, not cricket, hip hip and a stiff upper lip and all.
Rotella comes in a dino 15w40 version in a white gallon jug which is perfectly good for your Savage (and it's cheap too -- if you can get into a Sams Club or other discount/wholesale place you can buy it in 3 gallon BIG jugs REALLY dirt cheap) Walmarts everywhere sells it for about $11-12 a gallon in the standard white gallon jug.
The better stuff is the Synthetic Rotella 5w40 in the blue jug for about $21 a gallon for those with hot cams and big pistons that rag the piss out of their Savages. For stock engines, white jug 15w40 is fine and is about half the price of the blue jug ritzy stuff.
Rotella does not come in a 10w40 here in the USA I don't think ...
Now lots of people on the list like to buy $13 a quart motorcycle oils in little quart bottles with a motorcycle on the label. Yep, it does say JASO MA rated right on the label and that is a good thing.
If you look at a jug of Rotella (either kind) you will find the JASO MA motorcycle rating right on the label, listed right along with about every other rating for every other type of engine.
No picture of a motorcycle though, sorry -- just a very very good oil at about 1/4 as much $$ as the quarts of dino oil with the motorcycle printed on the label.
But remember, oil is oil -- not having some is what kills your engine.