Oil consumption

Asked by 78ff Oct 31, 2018 at 08:29 PM about the 2015 Subaru Forester 2.5i

Question type: Maintenance & Repair

I own a 2015 Subaru Forester and it consumes
about a quart every 2400 miles. It is a manual
transmission, and they seem to be prone to the
engine problem. My car falls under the terms of the
class action suit settlement which dictates a
determination from an oil consumption test. This
is my real problem with the car or more specific
the company. I just completed my third test
through two dealerships, and it has been an eye-
opener. The first test resulted in the engine using 8
ounces in 1200 miles ( the threshhold is 10.7
ounces, 1/3 quart) I thanked them and was willing
to except that, but over the remaining 5000 miles I
had to add oil at a rate of 16 ounces per 1200
miles. I called SOA and they agreed to another
consumption test. They changed the oil then called
me to the shop to show me an oil leak. This was
two drops of oil on two valve box housing bolts. I
pointed out no oil dispersement on the engine and
the two drops were clean unsoiled oil, um ? I had to
pay for the oil change, was told the oil leak repair
would cost $2,200.00. I decided to go to another
dealership, then things got really bizzare. They
agreed I could bear witness to the oil  reading. At
the oil change to start the consumption test, the
master technician stated the threshhold was 1qt in
1200 miles. I ask him to pull up the test guidelines
so I could have a copy, it was 1/3 quart. Twelve
hundred miles later, I returned to check the oil and
it was low. He pored in a few ounces without
measuring and said it was full. I pointed out it
wasn't up to the line and he told me we could go
another 1200 miles to continue the test. I told the
service manager I wasn't be satisfied with the
technician and he agreed to continue the test.
When the car was pulled around I decided to check
the oil level and it was about 1/2 qt overfilled from
the below full mark we had when We were
checking it together. I had the service manager
confirm and ask to see the manager. He agreed to
drain the oil and start again. They brought it back
and it was still 3-4 ounces overfilled. The service
manager took a photo with my thumbnail marking
the spot. He agreed he would check the level in my
presence himself. When I came back 1200 miles
later he pulled the car in the bay and said the
technician would have to check it. I told him that
wouldn't work for me. Forty-four minutes later I
was asked to come to the service bay and the
dealership manager was there. He showed the oil
level to be full. I reminded him about the technician  
overfilling the engine by 1/2 quart.  The test
controls were violated and since it was already
established the car was using 8+ ounces I
suspected it had oil added in my 44 minute
absence. I told him I would handle this through
SOA. As I walked out of the shop the Master
technician yelled out "Score" making sure I heard. I
am now scheduled for the 4th oil consumption test
at a third dealership 75 miles away.

6 Answers

One thing to keep in mind is the oil level needs to be read after 5 minutes of run down time, letting it run down longer can make it Appear to be overfilled. Your dealer should know this. Mine uses a timer. Check your paranoia at the door, there is no reason for a dealer to fake a test as they get PAID to fix the car.

2 people found this helpful.

One other factor is oil breaks down the longer you use it. Low oil consumption when the oil is new is typical in my experience. The last 1,000 miles in a change will normally have a higher rate of oil use.

20

Forget about the 1200 mile limit. Due to the short length of the test it is bound to have an enormous amount of error that is advantageous to Subaru. Next time, start the oil consumption test. Then drive the car until the light turns on and take it to the dealer. If the light turns on, I've been told by the dealer that it's supposed to be about 1 quart missing. You might want to add .1 quart or less for safety since you know it will burn more oil. Have a quart of oil with you in case the oil pressure "red" light turns on. If the red light turns on, you'd better pull over quick and add a bit of oil. Your 2015 comes with a cutout for a quart on the styrofoam where your jack is stored because Subaru knew that you'd need to need a convenient place to put it. How thoughtful! Have the techinician explain to you exactly how the oil level needs to be checked and have them check the oil level for you before you leave the dealer. If the oil is above the max hole/indicator, have them remove the excess oil and measure again before you leave. You will be able to measure the quart or more that was burned in whatever miles you drove and if it was 3000 or less, you have a good shot at failing the .3 quart limit. Have the tech document the findings and then argue for a new engine with Subaru America - not with the dealer. The dealer can only help you in limited, very black and white, situations.

1 people found this helpful.
170

Sebastien, sorry to hear that things didn’t work out for you. I think I am well on my way to failing my oil consumption test, having needed a top-up 5000 km in. Will see what happens... As for you, at least the ordeal is over. Congratulations on your new, non- Subaru purchase!

1 people found this helpful.
30

Sorry to hear you’re having to go through all of that. I had kind of a similar situation with my 2017’s test, but not nearly as frustrating as what you’re going through. After doing the oil change for the test I should of checked the oil with them before leaving but didn’t. It was over the top dot by about 1/2 inch. Went in for the first 1200 and it was at the dot, they tried to say it was fine. Explained they over filled so they had me come back for second 1200, this time it was 3/8-1/2” under the dot and they again tried to say it was fine. I argued and came back after the third 1200 and it was about 1/4” above the bottom dot. Again tried to say it was fine, argued and the service manager I’ve been dealing with and they agreed to short block replacement. It did help that I did my own consumtion test before going in to make sure I knew exactly how much it was consuming. Basically did my own oil change (which I have for all of them), put in exactly the 5.1 quarts, added a quart at around 4000 miles and took out just over 4 quarts during the next change which was just before 6k miles. I determined it was using just under two quarts between changes. They tried to deny consumtion every check and a different person checked it every time, so I had to explain and argue every time. I also have been dealing with SOA trying to get them to extend the warranty, they are refusing because the mileage is over 36000 even though it was under that number before I started the test. I’ve learned a lot from this experience. Never ever buy a Subaru ever again, and tell anyone I know to do the same. This is an ongoing problem that they’ve never solved and don’t seem to care. It must be cheaper to do what they’re doing.

3 people found this helpful.
50

2016 Impreza MT, uses about 1QT in 5k miles, since day one, 40k miles on it. I can live with that. The thing drives circles around trucks and SUV on snow covered roads and returns an honest 39MPG in the summer. Interesting that the issue seems to affect MTs more than ATs. Hate to blame the operator, but maybe the problem is magnified based on driver habits, wonder if excessive engine breaking (high revs to slow down in an attempt to save brake pads?) is partly to blame?

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