$15 is a steal. One pays for convenience and the penalty for slack is apparently $2 per ounce. :-)
There is no comparison to WD40 or PB Blaster. Plus it's a pleasant pink.
'91 Toyota Pickup
'09 Kawasaki KLR650
'12 Gunnar Rockhound 29
"They say the test of literary power is whether a man can write an inscription. I say, 'Can he name a kitten?'" -- Samuel Butler