Stop driving the vehicle immediately
Check engine oil level
Change the oil and filter if oil is low, dirty, or contaminated
Inspect for oil leaks
Check oil pressure with a mechanical gauge
Inspect the oil pan for metal debris
Remove and inspect the rod bearings
Replace worn or damaged rod bearings
Inspect the connecting rods for damage or out-of-round condition
Replace damaged connecting rods
Inspect the crankshaft journals for scoring or wear
Machine or replace the crankshaft if damaged
Replace main bearings if needed
Clean oil passages thoroughly
Replace the oil pump if worn or failing
Reassemble with correct bearing clearances and torque specs
Refill with the correct oil grade and quantity
Prime the oil system before starting
Start and monitor for abnormal noise and oil pressure
Replace the engine if damage is severe or widespread