Four Wheel Logic

Yes, oxygen sensors can be cleaned in a few cases, but cleaning is unreliable and replacement is usually the only lasting fix.

Yes, oil can leak from a head gasket when the seal around pressurized oil passages breaks and lets engine oil escape externally or into coolant.

Yes, your car can use E85 only if it is a flex-fuel model or the maker lists E85 as approved fuel on the cap and in the owner’s manual.

Yes, motor oil can go bad when additives degrade, moisture creeps in, or long storage changes how well it protects the engine.

No, motor oil doesn’t freeze like water, but it can thicken near its pour point in extreme cold and make cold starts hard on the engine.

Yes, motor oil can expire in practice, with unopened bottles often lasting up to five years and opened containers ageing faster once exposed.

Yes, lightning can strike a car, but the metal shell usually routes the strike around you when doors and windows stay closed.

Yes, lightning can hit a car, but the metal shell usually routes the strike around passengers if they stay inside with the windows closed.

Yes, an idling car can charge the battery, but charging stays slow and works best on a healthy battery and alternator with accessories off.

No, washing your car with dish soap strips wax and can dry paint, so use a pH-balanced car wash soap instead.