Skip the auto shop - Our mechanics make house calls

Q: My girlfriend accidentally poured about 5 quarts of water into my engine oil and drove the car 30 plus miles home from work

asked by on

My girlfriend accidentally poured 5 quarts of water into my engine oil compartment then drove it about 35 miles home from work.

My car has 294000miles.
My car has a manual transmission.

Hi there, thanks for writing in about your 1995 Honda Civic. There is an old saying about oil and water mixing - and for internal combustion engines, it typically ends up in broken parts. The extra volume of liquid inside the oil chamber could cause problems if not replaced ASAP; including damage to the combustion chamber, piston rings, cylinder head valves and more. The best option for you at this point is to stop driving the vehicle immediately and have the oil and filter completely drained and changed. When the engine drains, adding new oil and a filter should clear out the excess water, however, it would be a good idea to replace the oil and filter again after about 500 miles to be safe.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  • Home
  • Questions
  • My girlfriend accidentally poured about 5 quarts of water into my engine oil and drove the car 30 plus miles home from work

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: During spirited driving, power cuts out on hard left turns

Hello. The symptoms you are experiencing can commonly be caused by a weak fuel pump, or a fuel pump strainer. If the fuel pump is the original it may have weakened over time, and has become unable to provide the...

Q: I have always used regular 5W-30 Motor oil - should I change to synthetic?

Switching from regular to synthetic oil is not a problem. Your engine will benefit from the better lubrication, temperature resistance, and staying cleaner longer than conventional oils. Switching to synthetic oil or even back to conventional oil is not a...

Q: the dealer just resurfaced my routers and it's only 6 months old and 3,000 miles. Does this seem right?

This is absolutely not normal and is cause for concern. Your brakes under normal circumstances should have lasted you at least 40,000 miles. I would recommend having an expert from YourMechanic come to your home to perform a brake inspection....

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...