Do it right once.
Here's my 2 cents worth. NAPA sells a Chain and Cable Lube sold under a can # Macs 1370. It's pricey, but you use very little to get the squeaks out. I've had a can now for a yr. and still got more in the can. Cost about 8-9 American bucks. Goes a long way.
And no I ain't a NAPA dealer! lol.