The Pepsi jingle is solid in my memory, from childhood, and I have it as being slightly different from what Farrara and Bill D. posted.

It went:

Pepsi-Cola hits the spot
Twelve full ounces, that's a lot
Twice as much for nickel too       (Comment: Remember nickel soft drinks?
Pepsi-Cola is the drink for you!
RAH-duh-dah-dah
DAH-duh-dah-dah
DAH-dahhh-duh-DOT!

Dave Oesterreich