13:24 26-10-2025

Six car myths, busted: brakes, warm-up, 'lifetime' fluids

From drilled brake rotors to long warm-ups and 'lifetime' fluids, we debunk six car myths with facts and tips to save money, boost reliability and stay safe.

Some automotive myths sound harmless, yet in practice they can lead to breakdowns and needless spending. The Drive has rounded up the most persistent misconceptions that millions of drivers still take on faith.

The first: “Perforated brakes are always better.” The notion dates back to the 1950s, but modern specialists say drilled brake rotors are not an upgrade—they actually weaken the system’s heat management. A user named DerFahrt notes that this simply removes metal from what should be a heat sink, adding that such rotors tend to crack and fail sooner.

The second: “Modern cars need a long warm-up.” That held true for carbureted engines, but not for fuel-injected ones. It’s enough to wait until the idle stabilizes and set off without exceeding 2,500 rpm. The transmission will stay cold regardless of how long the engine idles in place, a counterintuitive point that still trips up many drivers.

The third myth: “Ralph Nader’s book killed the Chevrolet Corvair.” In reality, Unsafe at Any Speed appeared after GM had already revised the Corvair’s suspension to fix handling problems. The model remained in production for another four years, and its decline was tied not to the criticism but to the cheap-gas era, when buyers were choosing bigger cars with more powerful engines.

Fourth: “Fluids are filled for life.” In practice, there is no such thing as an eternal lubricant. One reader recalls that after 130,000 kilometers on factory transmission fluid in his Ford, what drained out was a black sludge. Even if a manual says “lifetime,” reality still calls for routine changes of oils and coolants.

Fifth is the story of Toyota’s unintended acceleration. For years it was widely attributed to driver error or floor mats wedging the pedals. Investigations, however, indicated the problem could have been rooted in software code, and the company denied a defect for a long time.

And finally, the most stubborn belief: “Cars used to be better.” In fact, as The Drive emphasizes, older vehicles failed more often, rusted more quickly, and offered less safety. Modern cars are far more reliable and durable.

The takeaway is simple: behind every myth lies dated experience or a shaky understanding of technology. The sooner drivers let go of these notions, the longer their cars will last—and the calmer their time on the road will be.