to each his own.

i just got my samurai rustproofed (underbody) with shell rustgard for 2500.

i know that manufacturers have already put in corrosion-resistant coating to the vehicles, but i believe an ounce of prevention is better than a pound of cure. lalu na kung nasa malapit ka ng dagat, very salty air, madali mangalawang ang bakal.

just make sure malinis (underbody wash and dried) yung ilalim before application of the coating. so that no dirt or moisture is trapped.