I’m very on the edge of the snake oils that are sold in auto part stores. Too many claims and not enough proof.
I have rarely seen an injector cleaner do anything as most gas has the same chemicals in it in a small portion.
I have experimented with plenty of water “removers” and such to little or no avail.
I have done small scale testing to see the proclaimed “ethanol separation” from gas, also to no avail.
I’m not saying they don’t all work, but I’ll believe it when I see it - personally.
Seafoam for the record, is in large part just rubbing alcohol with some other minerals added.
/offtopic
Get the battery tested at advance, see if it holds the charge under load or it’s general health. Especially with fluid added.
Put it on a trickle charger for 24 hours.