Newcastle, CA — Selling a car online is often a leap of faith — and for one Newcastle resident, that trust nearly turned into a costly mistake. Deputies in Placer County, California, arrested two men accused of running a classic “engine oil” scam that preyed on private car sellers.
According to investigators, the suspects — 19-year-old Lulian Mihai and 36-year-old Decebal Mihai, both from Fremont — posed as buyers, then secretly poured oil into the vehicle’s engine during a test drive to make it appear damaged. Once the engine began smoking or making noise, the pair would pretend to be concerned and offer to “help” by buying the car at a fraction of its actual value.
“This well-known scam tricks victims into believing their vehicle has a catastrophic problem, which the all-too-willing suspects are able to take off the victim’s hands for a steeply reduced price,” the Placer County Sheriff’s Office said.
How the “Engine Oil” Scam Works
The fraudulent tactic unfolds quickly. During a test drive, scammers discreetly pour oil or other fluids into the engine or tailpipe to simulate a breakdown. When smoke appears, they convince the seller the car needs costly repairs — and then negotiate a “quick sale” at a massive discount.
When a Newcastle woman noticed smoke coming from her car — something that had never happened before — she trusted her instincts. Believing something wasn’t right, she told the men to return another day and immediately contacted local authorities.
According to MoneyWise, deputies confirmed her suspicion and launched an undercover operation to catch the suspects.
The Arrest and Investigation
The woman arranged a follow-up meeting, this time with deputies and detectives waiting nearby. When the suspects returned, they were arrested on the spot.
A search of their vehicle revealed counterfeit documents, identity theft materials, and evidence linking them to a stolen Toyota 4Runner taken during a similar scam in the Bay Area.
Both men were booked into Placer County Jail on multiple charges, including theft, conspiracy, and fraud.
“This case is a perfect reminder that even the most convincing buyers may not have good intentions,” said a sheriff’s spokesperson. “Always meet in a safe, public location and never hand over your keys without caution.”
Growing Wave of Auto-Related Scams
Vehicle scams are on the rise nationwide. The Federal Trade Commission reported Americans lost $12.5 billion to fraud in 2024, while auto-related scams alone accounted for billions in losses.
The Point Predictive Auto Lending Fraud Report estimates lenders could face over $9.2 billion in fraud losses this year — the highest ever recorded.
Experts say scams have evolved from oil tricks to digital deception, where fake car listings, cloned dealer websites, and stolen photos are used to lure buyers.
“These scams work because they target trust,” consumer fraud specialist Jeff Carr said. “Whether it’s smoke from an engine or a shiny fake website, they rely on your emotions to override your caution.”
How to Protect Yourself When Selling a Car
Car sellers can reduce their risk by taking simple, proactive steps before meeting buyers. Experts recommend the following:
- Meet in “Safe Exchange Zones” — Many police departments offer monitored parking lots with cameras and regular patrols.
- Never go alone — Always bring a friend or relative to act as a witness during the transaction.
- Keep the keys until payment clears — Don’t hand over the car or allow extended test drives.
- Verify buyer identity — Ask to see a valid ID or driver’s license before any test drive.
- Trust your instincts — If something feels off or the buyer seems rushed, walk away.
- Avoid wire transfers or gift card payments — Use trusted platforms or verified bank payments instead.
With the average used car price topping $25,000 as of May 2025, protecting your sale is more important than ever.
“Slow and steady isn’t just a driving tip — it’s a safety rule when selling your vehicle online,” authorities added.
What are your thoughts on this case and how car sellers can stay safe? Share your views in the comments below.
