7. CHECK FLUID LEVELS
The various fluids that are a part of a car should be regularly checked for correct levels. Everything ranging from the basics such as windscreen washer fluid to the more important brake & clutch fluid, coolant and oil. Classic cars especially require different variants of oil and fluids in order to keep systems healthy.
Some classic cars will have power steering fitted as standard. Specific power steering fluids are required so be sure you have the correct one before adding. If you find that you're frequently adding fluid, it's likely there's a leak, and your car will become increasingly difficult to steer if it isn't addressed.
Over time brake fluid can become contaminated by water, which can make brake lines rust. Leaks can also form, leading to a spongy pedal feel or irregular brake performance. Most cars have a brake fluid reservoir in the engine bay, and checking it is as simple as taking a look at its level and colour. Like with other fluids, make sure the level falls between the minimum and maximum indicators. Add more if it's below the minimum, but make sure it's a type compatible with your car. Brake fluid comes in several varieties with their own distinct colours, but all should be translucent, not cloudy or dark. If you can't see through your brake fluid, get it replaced.
Transmission fluid serves a similar purpose as oil in the engine: it lubricates and cools the components inside your transmission. Transmissions contain gears, clutches (even in automatics), and valves which must move smoothly to provide seamless shifts. While many transmissions come with "lifetime" fluid that should never need replacement, bad transmission fluid can cause rough shifting, strange noises, and uncontrolled surging that make driving difficult. If you experience any transmission issues, check the fluid first. Some cars have a dipstick; however others require a professional mechanic to inspect the fluid condition. If your car has a dipstick, the process is the same as above, though you'll need to have the engine turned on and the transmission in gear or neutral to get an accurate read. Inspect the fluid level, as well as its condition. It should be amber or red in colour, and feel smooth. Like with other fluids, if it's dark, cloudy, or gritty, it means there is a problem that needs to be inspected.