The Car Engine Symptoms and Solutions Quiz

What's the mechanic's secret when tightening a new oil filter?

Correct Incorrect Always tighten a new oil filter with just a three-quarter turn to ensure the O-ring makes contact and seals properly. Overtightening can strip the threads.

What's the mechanic's secret when tightening a new oil filter?

• Just attach it. The heat will seal it up.
• Tighten it as much as you can.
• Only tighten it three quarters of the way to full tightness.
• There is no secret.

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