Md Amir

No, diesel engines do not use spark plugs; compressed air and precise fuel injection ignite the mixture instead.

No, a diesel engine does not use spark plugs; it relies on compression ignition and may use glow plugs only to help cold starts.

No, dielectric grease does not conduct electricity; it is an insulating silicone paste that protects contacts while metal surfaces carry the current.

Yes, DEF can freeze around 12°F (−11°C), but thawed diesel exhaust fluid still works and modern SCR systems are built to handle DEF freezing.

Yes, DEF fluid freezes near 12°F (-11°C), but it thaws back to full strength and modern systems heat it so the engine can stay emissions compliant.

No, cruise control usually uses a bit less gas on steady highways, but it can burn more fuel on steep hills, in strong wind, or in heavy traffic.

Yes, cruise control can save gas on steady highways, though gains fade in hills, wind, and traffic.

No, Costco doesn’t sell cars directly; the Costco Auto Program links members to partner dealers with preset prices and extra member perks.

Yes, Costco tire centers replace TPMS sensors for members, usually for an added parts and labor fee per wheel.

Yes, Costco patches repairable tires, usually free for member tires and low-cost for others when they pass basic safety checks.