'Miss a the shop teacher' busts common car myths

The host walks through a list of widespread automotive beliefs and judges each by practical mechanics and simple experiments. Key cooling-system advice: 'pure water in the radiator is all you need' is a misconception — coolant is a water+antifreeze mixture whose main job is to prevent corrosion and lower freezing point. Check packaging for the phrases 'already mixed 50' or 'concentrated' to know whether to add water. The host also flags a counterclaim from 'Motor IQ' that 'distilled water' can be problematic because the distilling process may leave water chemically imbalanced and increase corrosion, so distilled water isn't an automatic best choice.

Lighting and visibility: the rule 'You don't use high beams in the rain' holds in many cases because high beams intensify glare and reflect off water or fog; the host calls this situational and suggests hazard lights in heavy visibility-reduction situations to reduce rear-end risk. On LEDs, the host says 'LED bulbs work in any headlight housing' is circumstantial — some conversion kits exist but compatibility varies by housing.

Traction and stopping: 'Four wheel drive helps you stop in the snow' is false as-stated — four-wheel drive affects propulsion/traction, not braking; stopping depends on tires and conditions. The host recommends chains for heavy snow and explains ABS is designed to give control, not the shortest stopping distance. For heavy snow or off-road use, the host suggests disabling ABS (or using an off-road ABS mode) because wheel build-up can aid stopping in those contexts.

Aerodynamics and economy: 'Spoiler improves miles per gallon' can be true or negligible depending on speed, car shape, and spoiler size. The host distinguishes a 'wing' (adds downforce) from a 'spoiler' (reduces low-pressure drag behind a flat tail) and says measurable gains require controlled, apples-to-apples testing at highway speeds.

Maintenance myths: pumping brakes during an ABS stop is unnecessary and can even disable ABS; for cars without ABS, controlled pumping may help. 'Go change the transmission fluid at the corner' is nuanced: modern manufacturers recommend regular changes and 'lifetime' claims are marketing; if a transmission has ~300,000 miles and never had fluid changes, pulling the fluid can sometimes expose problems. For burning oil, don't just keep adding oil — change oil and investigate the underlying fault. The diesel-idling claim (idling uses less fuel than restarting) gets a thumbs-down pending data. Finally, 'old tires with good tread' is unsafe because rubber ages; read the 'DOT number' (a four-digit code: week and year; the last two digits indicate year) and avoid tires that are years old even if tread looks good.

Practical recommendation: develop real driving instincts by practicing in low-consequence environments (go-kart tracks like 'k-1 speed' or 'Pole Position'), and watch for the host's upcoming series filmed at 'Riverside City College' coming to 'racer network'.