Royal Purple 10036 Synthetic Gun Oil High Performance Multipurpose Gun Lubricant - 4 oz. Royal Purple's Synthetic Gun Oil is specifically formulated to provide exceptional protection against wear, rust and saltwater corrosion and fouling. It works well in a variety of temperatures and will not thicken in cold weather. Its performance advantages come from Synerlec, Royal Purple's proprietary chemical technology that strengthens the oil for unmatched performance and protection. Easily applied Long lasting Excellent for preserving and protecting parts in storage Special Shipping Information: This item cannot be returned and has additional shipping restrictions