Oil recomendation for subaru burning and making oil dirty

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12,148
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OH
My Accord does something similar. It burns a quart every 1k and it gets dark very quickly. I assume there is some blowby and oil control ring issues causing the burning. Given the mileage of my engine, it does not really concern me. I change the oil per the OLM and just top off as needed. I've used many different types of oils and viscosities and nothing matters. In my experience, HM oils help for leaks but not much for burning, FWIW.
New oem pcv valve may help but I think you already did that based on previous posts. Some 5w30 Maxlife Red bottle may help. Others on here have reported better results with it. Maybe even put in a quart of 10w40 Maxlife to slightly thicken the fill. WM sells it for 4 a quart.
 
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357
Location
North Carolina
New oem pcv valve may help but I think you already did that based on previous posts. Some 5w30 Maxlife Red bottle may help. Others on here have reported better results with it. Maybe even put in a quart of 10w40 Maxlife to slightly thicken the fill. WM sells it for 4 a quart.

Or just try 0W-40 European Formula and see how your engine runs on it. It's got a nice detergents and dispersants package as well ;) Can be found cheaper than most premium ILSAC oils at Walmart.
 
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Grand Rapids, MI
New oem pcv valve may help but I think you already did that based on previous posts. Some 5w30 Maxlife Red bottle may help. Others on here have reported better results with it. Maybe even put in a quart of 10w40 Maxlife to slightly thicken the fill. WM sells it for 4 a quart.

Yep, I've already replaced the PCV valve. I've tried just about every oil in it with no change, including MaxLife syn, Pennzoil Platinum HM, Pennzoil Ultra, etc. I've also tried 20 and 30 grades with no discernable difference. Fairly confident it is just the rings. Had the same issue with my old Scion.
 
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15,500
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N.H, U.S.A.
.... Fairly confident it is just the rings. Had the same issue with my old Scion.
You must have missed my post. Look up the TSB Honda has out for this specific issue. Unfortunately the cylinders will be scored.

if it was mine and the car was solid I would perform a hone with a re-ring - and hope for the best. This can be done in car I might guess. I would only try this "shortcut" If the scoring is shallower than 5mils; if worse the block would have to be bored, requiring new pistons. Not an expensive job other than the motor R&R labour. If you can do it yourself, it'll be worth it, I bet.
 

JT20

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You must have missed my post. Look up the TSB Honda has out for this specific issue. Unfortunately the cylinders will be scored.
if it was mine and the car was solid I would perform a hone with a re-ring - and hope for the best. This can be done in car I might guess. I would only try this "shortcut" If the scoring is shallower than 5mils; if worse the block would have to be bored, requiring new pistons. Not an expensive job other than the motor R&R labour. If you can do it yourself, it'll be worth it, I bet.
Subaru engines are wide and flat. Heads have to comd
 
Messages
125
Location
Birmingham, Alabama
As a Subaru guy, I would recommend a high mileage conventional in a 10w30 or 10w40 flavor. Roll the interval back to 3k miles. I wouldn’t run Rotella because of the heavy add pack will just add to the soot you see.
I’d pick up Supertech HM or Napa brand HM. They are cheap and topoffs will be less painful with cheap oil. Burning oil and oil leaks are common on the na EJ engines. Especially after 100k-150k miles.
And as others have said, do a PCV service.
 

JT20

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As a Subaru guy, I would recommend a high mileage conventional in a 10w30 or 10w40 flavor. Roll the interval back to 3k miles. I wouldn’t run Rotella because of the heavy add pack will just add to the soot you see.
I’d pick up Supertech HM or Napa brand HM. They are cheap and topoffs will be less painful with cheap oil. Burning oil and oil leaks are common on the na EJ engines. Especially after 100k-150k miles.
And as others have said, do a PCV service.

No point of exotic oils on an EJ?

Are they that bad?
 
Messages
125
Location
Birmingham, Alabama
No point of exotic oils on an EJ?

Are they that bad?
They NA engines aren’t bad at all. I just wouldn’t waste money on a Synthetic if the engine is burning and consuming oil.
FYI, Valvoline was used by most Subaru dealerships in the early and mid 2000’s. That’s why I recommended what I did. Supertech is cheap and Napa is rebadged Valvoline.
I had a 2008 Impreza with a 2.5l NA EJ. It had 157k on the odo when I traded it in. I tried many different oils in it. Best results came from Valvoline conventional (white bottle). The car went through about 1/4 to 1/2 qt every oil change when I traded it. 3-4K miles. But it still ran like a top. 👍🏻 Loved that car.
5speed premium hatchback. Silver with black interior. Was a special order when I bought it new.
 

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JT20

$50 Site Donor 2021
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They NA engines aren’t bad at all. I just wouldn’t waste money on a Synthetic if the engine is burning and consuming oil.
FYI, Valvoline was used by most Subaru dealerships in the early and mid 2000’s. That’s why I recommended what I did. Supertech is cheap and Napa is rebadged Valvoline.
I had a 2008 Impreza with a 2.5l NA EJ. It had 157k on the odo when I traded it in. I tried many different oils in it. Best results came from Valvoline conventional (white bottle). The car went through about 1/4 to 1/2 qt every oil change when I traded it. 3-4K miles. But it still ran like a top. 👍🏻 Loved that car.
5speed premium hatchback. Silver with black interior. Was a special order when I bought it new.

Did yours rattle on start-up?

I like Supertech engine oil too. Mine is driving me mad and I like the Subaru and it runs well it's just... Hydraulic lifters??

You used 5W-30? 5W-20?
 
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Location
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Liqui-Moly “Oil Saver” may be worth a try. It worked well for me stopping a front cover leak. In your case it could be the oil consumption is caused by hardened valve stem seals - it works on those, too.

If it does work, I found that progressively smaller doses keep the benefit and use less product.
 
Messages
118
more to crankcase ventilation than a pcv valve. but if your pcv valve was broke and you put in a new one, maybe it fixed now?
 
Messages
125
Location
Birmingham, Alabama
Did yours rattle on start-up?

I like Supertech engine oil too. Mine is driving me mad and I like the Subaru and it runs well it's just... Hydraulic lifters??

You used 5W-30? 5W-20?
As long as it’s not the dreaded death rattle, I wouldn’t worry. EJ’s tend to be noisy. The sound is amplified by the proximity of the engine heads to the fender wells. Mine had a noisy “tick” from the lifters as well as just being a boxer engine and the firing order. The engine fires right right left left, right right left left.
I used 10w30. That was my flavor of choice.
 

JT20

$50 Site Donor 2021
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As long as it’s not the dreaded death rattle, I wouldn’t worry. EJ’s tend to be noisy. The sound is amplified by the proximity of the engine heads to the fender wells. Mine had a noisy “tick” from the lifters as well as just being a boxer engine and the firing order. The engine fires right right left left, right right left left.
I used 10w30. That was my flavor of choice.

Nah, no death rattle/death wobble. Nope. It could be the lifters pumping up with oil.

It went from Typewriter sound (good sound) to that one-second Ahhh what is that noise and it was not until mk378 mentioned Hydraulic Lifters pumping up that I realized I didn't have a problem. It has been suggested just because it was cold out. What kind of oil filter did you use?

If you're anything like me.. you drive your Subie like this lol. Only slight exaggeration lol

 
Messages
125
Location
Birmingham, Alabama
If you're anything like me.. you drive your Subie like this lol. Only slight exaggeration lol

Maybe. 😁
Tail of the Dragon.
 

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