▎ 摘　　要

NOVELTY - A multifunctional engine line protective agent comprises 30-60 pts. wt. ethylene glycol ether, 20-30 pts. wt. insulating resin, 0.3-0.5 pt. wt. 4-tert-octylphenol diethoxylate, 0.1-0.2 pt. wt. tetraethyl orthosilicate, 0.5-1 pt. wt. graphene oxide, 10-20 pts. wt. propane and 10-20 pts. wt. butane. USE - Multifunctional engine line protective agent (claimed). ADVANTAGE - The multifunctional engine line protective agent has excellent oxidation resistance and high-pressure resistance, and has functions of isolating moisture, delaying circuit aging, repairing fine cracks, and keeping clean. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of multifunctional engine line protective agent, which involves uniformly mixing the above-mentioned components expect propane and butane at room temperature, pouring the mixed components into metal aerosol tank, and then filling with propane and butane.