Significantly lighter?
Well if you got the eclat seat&seatpost combo, theres prolly half a pound to a pound.
Get KHE Street tires or Tioga Powerblock and theres another pound
Get Odyssey Race Forks and theres maybe a third of a pound
Get new wheels with rynolite rims and theres some white, and...
hey hey hey dont be hatin on huffy.if your actually willing to spend money there bikes are decent. but you could get new grips if you wanted.just cut the old ones off and put new ones on.i recommend you get a 3 piece crank also as huffys only come with 1 piece
Well if its hard to turn that means your headset is too tight. If you have an integrated headset you can compress it by tightening&loosening the bolt on top of your stem. There is no point in oiling it because it already has enough.