Penetrating Fluids

[hellosailor]

Never had the chance to try VpCI but PBlaster gave me religion. Exhaust manifold bolts, untouched for 20 years. Spray & repeat...four x because I wasn't in a rush...and they just unscrewed like new metal. U-bolts holding up an external antenna support, generic zinced bolts rusting for 20-30 years on a roof? One shot, fifteen second count, spun off like new clean metal.

Once it gets that good, can anything really get better??

The only thing I like more is using a CO2 bottle to ice things down, but that's WAY noisier and WAY more expensive.

[Chief Engineer]

In this order..
PB Blaster
Kroil
WD-40
Good Brass Hammer or Drift (to shock nuts) Technique showed to me by a crust port engineer) Drift an be made from old Bronze shaft (12" is a good length)
"Hot wrench"