Data from a 1996 DesRosiers survey indicated that after 4 years, a vehicle without any additional rust protection was certain to show some degree of rusting. Even during the manufacturer’s warranty periods, significant percentages of untreated vehicles showed some rusting.
In early 1997, DesRosiers estimated the average of vehicles on the road was 7 to 9 years old.
Without additional rust protection, it is only a matter of time before rust will appear. Even if a vehicle is not kept over the long time, additional rust protection will protect your vehicles’ resale value or its residual value at lease maturity.