Oil filter

What it does

Traps metal particles and sludge so clean oil reaches the engine bearings.

Signs it needs replacing

• Due at every oil change
• Oil turns black very quickly
• Oil pressure light flickers

What to tell the shop

• Vehicle make, model and model year
• Engine size, and whether it is manual or automatic
• The number printed on the old part, or a photo of it
• Whether you want genuine, OEM or a local replacement