
Dry Steam vs. Water: Why We Clean at 170°C
Dry steam vs water: 5 reasons why 170°C cleans interiors precisely with minimal moisture-using far less water and less chemistry. Faster drying, premium-safe. Formel7

A classic car isn’t an ordinary vehicle. Paint is often thinner or built differently, chrome parts can be more delicate, and many interior materials react sensitively to aggressive cleaners or too much moisture. A normal car wash may deliver short-term cleanliness, but rarely the kind of protection that matters for long-term value—especially for vehicles meant to be preserved for years.
At Formel7, our approach to classic car detailing is built around one principle: control and preservation. The goal is not “as new as possible,” but “as original as possible”—with a refined, high-quality finish.
Classic cars are more vulnerable because many components age differently than on newer vehicles:
Paint: Often thinner, sometimes without a modern clear coat, and frequently carrying decades of patina. Incorrect washing can quickly create micro-scratches or dull patches.
Chrome & metals: May show pores, fine scratches, or early oxidation. Too much pressure or the wrong products can leave visible marks.
Interior: Aged leather, plastics, fabrics, and adhesive bonds can be sensitive to strong chemicals or excess moisture.
Seals & rubber: Become brittle and are often difficult to replace—caring for them is not “cosmetic,” it’s functional.
That’s why the rule with classics is simple: precision beats force.
Professional classic car detailing focuses on three areas that stabilize condition over the long term: paint, details (chrome/metal/trim), and soft-top & materials. The key is always a controlled process: assess first, test, then work gently—rather than pushing aggressively.
Most damage doesn’t happen during polishing—it happens during washing. Dirt particles dragged across the surface quickly cause micro-scratches, especially on sensitive finishes.
Safe paint care means:
Chrome and trim define the character of many classic cars—and they’re also among the most delicate elements. That’s why the work is controlled: gentle cleaning first, targeted refinement next, then surface protection.
What matters most:
A convertible top is one of the most sensitive areas on a classic car. The most common mistake is too much pressure or uncontrolled moisture—especially around seams and edges. Safe soft-top care means cleaning in a material-friendly way, controlling moisture, and allowing the top to dry completely. A suitable protective layer afterwards helps water and dirt penetrate less deeply—so the roof stays cleaner longer and ages much more slowly.
The interior often determines whether a classic feels “well cared for” or only superficially clean. At the same time, many materials are sensitive: too much moisture, harsh cleaners, or the wrong care products can permanently change surfaces. That’s why interior detailing is about precision, not aggressiveness.
Interior work is not about soaking everything—it’s about removing dirt selectively. The process starts with dry cleaning (vacuuming, lifting dust and particles), followed by mild cleaning with controlled moisture. Full drying is essential before applying any care or protection. Done properly, the cabin feels noticeably fresher—without creating moisture-related issues.
Leather can dry out and crack over time, plastics lose color, and seals become brittle. Proper care creates clean, natural-looking surfaces without greasy shine, restores a supple feel, and reduces ongoing aging. Seals and rubber are often underestimated—yet they influence comfort, sealing performance, and long-term value preservation.
Classic car detailing isn’t a show—it’s preservation. Working gently, with control and material awareness protects not only appearance, but also the historical and financial value of the vehicle. A high-quality detail brings your classic to a condition that feels right: clean, refined, original—without looking “over-restored.”

Dry steam vs water: 5 reasons why 170°C cleans interiors precisely with minimal moisture-using far less water and less chemistry. Faster drying, premium-safe. Formel7

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