Spray with Penetrating Oil

Soaking for 5 minutes should work in most cases. If the bolt remains stuck, soaking for an additional 24 hours may help.

Penetrating Oil Comparison

Penetrating Oil Image Price Price Per Ounce Reviews Average Review Net Weight oz Walmart Price
PB Blaster Penetrating Catalyst - 11 oz. #16-PB $3.76 $0.34 614 4.57 11 52
Liquid Wrench Penetrating Oil Spray - 11 oz. #L112 $3.97 $0.36 165 4.3 11

Parents

Extracting Rounded Bolt Heads and Nuts