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2015 Forester auto
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Discussion Starter · #1 ·
I have a Subaru forester 2015 , I know they're is a class action for the previous models, but my car Is burning oil way too much also, I change the oil every 3000 miles and after 2 month of normal driving, 1 quart has been consumed. this is unacceptable for a car that has only 40000 miles. I'm asking for Subaru to look into it... Thank you
 

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2014 Touring with Eyesigh CVT
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616 Posts
You are within the safe limits.

Laughing at oneself and with others is good for the Soul
 

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2015 Subaru Forester 2.5i
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184 Posts
Did you get the oil light to indicate low oil or did you check the amount after the oil change?

I've had the light come on a few times during the 45k miles it has on it and now since the car is now used for local driving, I wonder if I do an oil consumption test will it come back normal.

What oil do you use? The first time it came on was after I got my oil changed at the dealer. The first 2 oil changes I've used Valvoline and didn't have any issues so I'm thinking the engine wasn't quite broken in yet. I've had the light on other times when the car had higher than normal driving on it in addition to the 40 mile commute during those times, most times it during summer or warmer weather. I used mostly Valvoline initially and only recently did i use Mobil1 but since it's driven locally, I wouldn't think there'd be any oil consumption issues now.
 

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2014 Forester 2.5i Ltd. CVT
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I am also wondering if I should pursue a warranty claim for excessive oil consumption. I had the oil changed by Subaru prior to leaving on a cross country trip (3,000 miles). Sustained speeds were 70 to 80 MPH and there were plenty of steep grades along the way. I brought along two quarts of Mobil1 because on two previous coast to coast round trips, the Forester consumed one quart in 3,000 miles. On this trip I had to add one quart at 2,000 miles and I see that the oil is halfway between the marks on the dipstick at 3,000 miles. The odometer is only at 51,000 miles. Interesting to note that before a 3,800 return trip, I did an oil change using Valvoline and a factory filter. Only a half quart was consumed. Also worth noting is that oil consumption is only a problem when sustained speeds are over 65 MPH. Otherwise, I don鈥檛 see noticeable consumption for normal day to day driving around town and round trips of 120 miles or less at freeway speeds of 65 MPH. Valvoline seems to be the one brand that burns less and Mobil1 the most. The only other brand used was Chevron that the dealer used initially, now Subaru Oil. I have used Valvoline exclusively in my two Sprinter RV chassis with exceptional results. Mercedes-Benz is very specific when it comes to engine oil.

Last April, I got a new 2017 Subaru BRZ and this September I got a 2019 Subaru Ascent. My intention is to pass the Forester on to my daughter to replace her well worn Mazda. It makes sense to keep a low mileage Subaru in the family, especially since the extended warranty goes to 70,000 miles and to year 2020. I understand that Subaru is not alone when it comes to excessive consumption of low viscosity oil. The Forester engine performs well in all other respects. I have been told that once the oil consumption is noted, it will only get worse... a lot worse. I don鈥檛 see a quart or two between oil changes enough reason to tear apart an otherwise good engine. A major repair is pretty intrusive and could be the start of other problems. Sort of like elective surgery to correct a condition that could be lived with to avoid surgical complications. What I don鈥檛 find acceptable is having to add a quart of oil after every other fuel fill up. Is that what we can expect going forward to the end of the useful life of the engine? Then maybe is would be wise to have Subaru do something now. One thing that may complicate an oil consumption test is that negligible amounts of oil is burned with normal driving. I am certainly not going to drive back to the testing dealer 2 1/2 quarts down just to prove a point.
 

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2019 Crosstrek 2018 Forester XT
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14,794 Posts
My subaru (181K Miles) uses a quart every 3.5K miles. At 70+ mph it uses a quart every 500.

I switched to 5W-40. Problem is gone.
 
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