Will this oil work

See photo. Search results on this forum resulted in nothing, for oil rated API CK-4.

I got 6 quarts at $4CAD each, seemed like a good deal, I can return it if it isn’t a good deal.

Is this okay for the xs400 DOCH?
Any help in the right direction to better understand what is necessary for oil changes - ex wet clutch... would be appreciated. I won’t be running this bike in cold weather so I know this is probably a bit (heavier?) than I need?

I’m embarrassed by how much of a rookie I am at this stuff but I won’t get better unless I log some time in my garage.

Whats cold weather to you? lol

Thats motor oil, for motor vehicles. DO NOT use it with a motorcycle.

You need a motorcycle specific oil.

Well cold weather to me is pretty damn cold, I live on the prairies in Canada. I know there are some areas with a 12 month riding season in the states, we aren't even close to that here.
I guess the reason for including that info in my previous message is that I wasn't sure how the weight of the oil is affected by high or cold temps. I am new to the mechanic world, I mention this in almost every post I make, I'm just looking for help understanding this stuff and to know if I am making any critical mistakes - and it looks like using this oil would have been a big mistake.
So, I will return it, no harm no foul.
If you have any recommendations for your preferred oil @NewHavenMike , please send them my way.
Thank you,
Addison

A few tips. Car oils of lighter weights are energy conserving oils. These have friction modifiers that make wet clutches slip.
Often have a starburst on the label. These are anything less than 20w50, some 10w40 oils are this way too.
These are ATV/motorcycle oils that are lighter weights as in 10w40 and 10w30 that are wet clutch compatible.
On the back of oil jugs there is a list of ratings. A JASO or JASO M means they have been tested and approved for wet clutches. Most bike oils have this rating.
Oils for diesel engines can have this rating, they are often used in track driven vehicles. These vehicle use wet clutches in the track drives.
In cooler climes a 15w40 diesel oil like Rotella T4 is ok.
In warmer weather a 20w50 works better. Cut off point is about 40*. Below that go with the lighter oil.
Yamaha used to recommend a 20w40 oil for a lot of these older bikes. It's not found to often today.
I use Valvolene 20w50 motorcycle oil. I get it at the local auto parts stores. I don't use a synth oil I my older bikes because of the shorter oil change intervals, the synth is not cost effective in these.
Some people have had good luck running Wal Mart's store brand 20w50 car oil. They don't seem to have clutch issues with it. They do change it often. 1500 mile intervals.
Leo