Q: Q: Engine has sludge.

asked by on

My engine has sludge in it. The dealer says the engine needs to be replaced. Can sludge be removed? If so, what is the cost? If not, what is the cost of replacing an engine?

Replacing an engine is a very costly repair. Oil sludge often results from contaminated or neglected oil. Not having oil changed at regular specified maintenance intervals will cause sludge to build up inside the engine. Sludge if not excessive can be removed via an oil system flush. A flush consists of a detergent additive that is run through the engine oiling system and these detergents break down the sludge and then the oil system is drained. Unfortunately, though once excessive oil sludge develops in the engine lubricated engine parts become starved of oil and premature wear of components and failure often occurs. Before replacing an engine though I would recommend a second opinion by a mechanic, such as one from YourMechanic, who can determine if a flush can save the engine or if an engine replacement is going to be the only option.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Q: Engine has sludge.

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Rattling coming from the engine.

A low rattle sound in the engine could be a symptom of failed crankshaft bearings. It could also be a symptom of a simple pulley bearing going bad for your serpentine belt. I would ask for help from a mechanic...

Q: Changing spark plug or ignition coils

Changing spark plugs at 46000 isn't necessarily a bad idea, but mostly I say that because it will keep them from seizing to the cylinder head. Most late model cars like yours can run a set of plugs for longer...

Q: Black flakes in oil

It depends on where the black flakes are. If you are talking about when you change the oil and there are black flakes, then you will need to have them analyzed. If those are pieces of metal, it means...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.