How to Maintain and Store Your Classic Car

Mar 30, 2025

On today’s Gearhead Guru Guide, we’ve got a checklist of service points and maintenance tasks to help you care properly for your classic car. We’re focusing on some maintenance tasks and tips for keeping your collector cars and vintage cars in their best condition. These basic maintenance tips and checks will save you a lot of hassle and large ticket repairs down the road. Let’s learn how to care for your classic car and keep those vehicles pristine for years to come!

The Basics of Maintaining and Storing a Classic Car

The care and keeping of your vintage and classic collectible vehicles is paramount! Learn how to properly prepare your car for long term storage, keep you car in top shape while it’s actively in use, and how to spot signs of damage before they become a larger issue.

Always use the correct type of gas. Collector cars tend to be older and have differing needs to the average modern car. While modern unleaded gas contains a percentage of ethanol, this may not be ideal for your vintage collectible. We recommend utilizing “recreational gas” often sold for use in boats, RVs, campers, etc, as this is generally an ethanol-free option. Additionally, store your car with a full tank of gas to prevent condensation and moisture build-up during storage.
Change and flush the fluids. Make sure you have the transmission fluid and differential fluid flushed and changed. The cooling system should be flushed out annually to help prevent corrosion, clogging, and build up. Let your mechanic know how long the vehicle will be stored for so they can help you find the correct ratio of distilled water to coolant for optimal storage. Make sure you also bleed the brakes twice a year for proper maintenance and even wear on the brake pads and rotors.
Inspect and maintain the tires. Since classic cars are generally not a daily driver, this means they’re spending a lot of time in storage. While tires can last for several years, factors such as weather, heat/humidity, duration of storage time, driving habits and frequency all have a heavy impact on durability and longevity. It’s important to take your classic car out for a spin and regularly condition and clean the tires to prevent dry rot and other issues. Make sure you’re checking tire pressure and inflating appropriately to proper PSI. Keep up with regular tire rotations and tread depth checks as well.

Regularly inspect for signs of excessive wear and rust, and keep it clean both inside and out. Older cars are more susceptible to rust and rot, especially on the undercarriage and wheel wells. Bringing your classic car into a professional car wash and detail once a month or every other month is recommended to maintain the exterior paint and prevent buildup. Cold weather months can have an added risk for salt build-up and road gravel damage, so you will want to rinse it off weekly if driving in cold winter weather. Cars that sit in storage may also take on a couple of hitchhikers like mice, chipmunks, and related rodents who take up residence in the stationary vehicle for warmth and safety; be sure to check the interior fabrics and upholstery for signs of rips, tears, and animal droppings.

Remember to use the correct motor oil. Collector cars generally require a conventional oil, instead of the modern day synthetic options.For collectible and antique cars that may be sitting in storage longer, you should maintain a schedule of at least once yearly oil changes plus oil filter replacements at minimum. Keep a regular eye on your oil levels as well, never letting it dip low to prevent long term damages.
Store your classic vehicle properly. The vehicle should be placed in a temperature-controlled environment not exceeding or going below 50 degrees for optimal storage, and never above 70 degrees. A heated garage or climate controlled storage facility are preferable. Use a dehumidifier to maintain no more than 40-50% humidity.. The environment should be clean and dry to prevent humidity causing rust and other degradation. Cover the vehicle with high quality vehicle cover custom fitted to your make/model to help preserve the paint and exterior. Consider also utilizing a “tire saver” or tire cushion to prevent flat spots during longer term storage.