You should add "Every year or Maximum 2 years, the del Sol should have a radiator flush and a brake fluid flush!
Brake fluid breaks down with age and exposure to humidity. When the brake fluid breaks down or absorbs humidity it loses the ability to protect against corrosion and this usually results in corrosion of the metal parts of the brake system (calipers, master cylinder, proportioning valve, brake lines). This can be a very expensive repair.
Similarly, anti-freeze provides corrosion protection AND lubrication for the water pump. Especially here in hot SW Florida, anti-freeze breaks down and can lead to premature water pump failure and radiator failure. This can be a very expensive repair too!
Also, for those low mileage drivers or for vehicles that are stored not driven for weeks or months and especially in high humidity climates fuel additives to expunge water are necessary. Fuel contains ethanol. Ethanol absorbs water. Water will corrode your fuel system, particularly the gas tank and fuel pump. It is never a good idea to let a car sit for any period in any climate with a partially filled tank because this will increase the absorbtion of water. Again, the corrosion in gasoline ages and deteriorates with age and humidity. Fuel driers should be used periodically to remove any built up water in the bottom of the tank and especially if you are in a humid climate even if you drive every day! Fuel stabilizers should be used if a car is not driven for weeks or months at a time and you should drive the car long enough that the fuel stabilizer will permeate the entire fuel system up to and including the injectors. How do you know if you have a problem, change your fuel filter and look for particles of rust or sludge coming out of it if you flush it backwards!