1. Bodywork: No Chance for Hidden Water

After the last drive, a thorough wash is mandatory to remove aggressive dirt. But beware: drying is the most important step.

• The Problem: Water creeps into the tightest seams, trim strips, and lamp housings through capillary action. Simply wiping with a chamois won't reach these areas – rust blooms in secret.
• The Solution – Compressed Air: Use a compressor or a powerful car dryer. Meticulously blow out all trim strips, door handles, locks, and crevices until absolutely no water mist emerges. Only a bone-dry car should go under the cover.

2. Technical Wellness: Oil Change and Full Tank

Many only do their service in the spring. For the engine, however, this is the wrong order.

• Fresh Oil Against Acid: Old engine oil contains combustion residues and aggressive acids that can attack bearings and metal surfaces over the winter. An oil change before the break (including warming up the engine!) ensures that the engine overwinters in a basic and clean state.
• Fighting Ethanol: Modern gasoline ages quickly and attracts water. Fill steel tanks to the brim (prevents rust on the inner walls). Add a fuel stabilizer on the last trip to the gas station to protect the carburetor and injection system from gumming up.

3. Chassis: Pressure Instead of Jacking Up

Avoid jacking up the car until the wheels are off the ground. This often damages the suspension bushings, which are then under unnatural tensile stress.

• Increase Tire Pressure: Inflate the tires to 3.5 to 4 bar. This effectively prevents flat spots.
• Tire Cradles: For perfectionists, "Tire Shoes" can be used to increase the contact surface.
• Important: Secure the car with chocks and engage a gear. Never apply the handbrake, as the pads could otherwise rust to the drum or disc.

4. The Golden Rule: The Engine Stays Off!

It's tempting to "just briefly" listen to the sound in winter? Don't do it.

Running the engine briefly while stationary does more harm than good. The engine does not reach operating temperature, causing condensation to form in the oil and exhaust system. The result: oil sludge and rust in the muffler (from the inside). Only start the engine again when you are truly ready for: Get out and drive.

5. Battery & Interior

• Trickle Charging: A deeply discharged battery is often scrap. An intelligent trickle charger (e.g., C-TEK) simulates driving operation and keeps the battery fit.
• Air Circulation: Leave the windows slightly open (in dry garages) and place a dehumidifier cushion in the footwell to prevent mold on the leather.

Overview – Checklist for the Perfect Winter Slumber

Conclusion

Winterizing is not a bothersome duty, but active value preservation. If you follow these points, your classic car will be safe and sound. Use the winter to look forward, plan new routes, and rest assured: When spring comes, one turn of the key will be enough, and it will be time again to:

Get out and drive!