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How do I tell if the oil change was successful after completing the job?

Documented on the 1965 Ford Mustang build

Published August 3, 2026

After refilling, start the engine and look for leaks around the drain plug and filter.

Full Answer

After refilling, start the engine and look for leaks around the drain plug and filter. Check the oil pressure light/gauge, let the engine reach operating temperature, and recheck the dipstick level after a few minutes. Reinspect for leaks after a short drive.

Related Parts

Engine oil (5 qt)
Mobil 1 (example)$40
Oil filter
Motorcraft (or equivalent)$12
Drain plug crush washer/gasket
$1
Replacement oil drain plug (oversize/standard)
$10

Related Tools

Floor jack
Jack stands
Socket set and ratchet
Shop rags and gloves
Oil drain pan
Funnel
Oil filter wrench
Thread tap / bolt extractor / helicoil kit
Torque wrench