Q: Engine Oil Consumption

asked by on January 13, 2017

About every 1000 miles I need to add engine oil about 3/4 quart. What should be normal consumption? I have some synthetic Mobil1 5w-20 oil. Can I use for top up? I use regular 5W-20 oil.

My car has 82000 miles.
My car has an automatic transmission.

Oil/Fluid Leak Inspection $79.99 - $89.99 Get a Quote

Conventional, mineral-based engine oil and synthetic engine oils are completely miscible and thus you can top off with either. Your oil consumption is relatively high. There is a wide range of values for the "normal" or average rate of oil consumption but a bottom line is using close to one quart in 1,000 is outside the normal range. You have either an external leak, and/or oil is getting into the combustion chambers from leaking valve stem oil seals, leaking valve guides and/or leaking piston rings. Any of these potential sources can be evaluated by a certified Mechanic during an oil leak diagnostic.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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

What others are asking

Flat tire, not sure what to do

Hello, thanks for writing in. You should not drive the car on the flat tire or else you will ruin the tire and rim. You should have a spare tire in the trunk that can be put on in the...

My 2003 Honda CR-V won’t accelerate past 40 mph and it starts to kick at 40. The mileage has dropped the past few months too

If the emissions or check engine light is on, there will be stored codes which might provide relevant clues as to the underlying fault. Among common possibilities for the loss of power you are are describing are throttle body faults...

2006 hyundai sonata , every time it rains my trunk and drivers back Seats gets soaked

The water leak you are describing probably originates at the trunk weatherstripping, the rear glass and sometimes even the taillights assemblies will leak at their seal to the body. Of course, there could be more than one leak point, too....

My remote won't unlock or lock the driver side door but opens the other doors.

Hi there. When this issue occurs, it's typically caused by an electrical short or damaged fuse which supplies electricity to the power door lock. The best way to know for certain is to have a professional mobile mechanic come to...

Air bag light has been on for about 2 months

Hi there, thanks for writing in. I would recommend having an expert from YourMechanic come to your home to diagnose as a second opinion or to find any possible alternatives to correct this. There is a good chance this can...

We have been told that our crankshaft housing is leaking oil on our 2011 Toyota Sienna. We already replaced the rear main seal.

Firstly, I have never heard of a crankshaft housing. Perhaps they were referring to the engine? The crankshaft is inside the engine and located on the bottom side of it. The pistons are all connected to the crankshaft and the...

Had oil changed, filter was not put in correctly and now have a p0014 code.

Hi there. This article on what the P-0014 OBD-II trouble code is, what causes it and how it is resolved might shed some light on this issue. The only item that may have caused damage to this sensor would be...

Gear shift is in park but dash says reverse

The shift cable ends at transmission shift lever or at where it connects to inside shifter is most likely the problem. The cable ends have a plastic bushing that falls apart and causes the problem. The entire cable may need...

Poor gas mileage 2013 Hyundai Sonata

Hello - if your car passed emissions testing, and the Check Engine light is NOT on, your vehicle is at least passing the on-board diagnostics. Many other factors can affect fuel mileage however, tire pressure, clogged fuel filter, short trips...

Related articles

How to Check Your Oil
Changing engine oil is an important part of basic car care. Check motor oil on the dipstick to know if you need to add oil to your engine.
How to Read a Motor Oil Label
Read an oil label to know the right type of oil to use in your car. Some new engines require synthetic oil, while older engines use conventional oil.
A Buyer’s Guide to the 2011 Cadillac STS
Big, Big, bold and beautiful, the 2011 Cadillac STS is a full-size, four-door sedan that promises more than ample room for the entire family, as well as the power and performance you expect from the automaker. 2011 marked the final...