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I have nothing to lose. haha :ROFLMAO: I will try above engine oil and report back.

For now the CEL has gone off on its own, but I am concered that it might pop up at some point again. It's roughly 1k miles or so since that light illuminated. I also tried Cataclean, it defintiely seems like a nice product. I could tell it did improve something. The pedal is more responsive.

For what's worth, I don't think HPL engine oil did anything. For a $60 oil with lots of positive reviews, I was hoping to see some positive outcome, but nada. I am reluctant on pouring money on an expensive oil if it's not actually improving. I used that oil for almost 5000-6000 miles. It's not...

Typing this on the phone. I logged this. I am not sure if I captures upstream and downstream both. I could only find these ones with lambda in the obd scanner. They mirror each other. Not sure if it is the same sensor though (at idle).

Thank you, I will look into it. I also forgot to mention I did 3-4 oz of yamalube a tank ago too. I am throwing everything to reduce oil consumption lol I came across cataclean and thinking of trying that. Looks like my vehicle reports lambda value. Is it the same thing I should compare to see...

Update: I finally flushed the HPL engine oil. I stretched it up to 4600 miles with that oil. I did top up at least twice, one with regular oil, and one with rislone. I ended up doing an oil change with Pennzoil Euro 5w-30 just recently. And I recently got P0420 check engine light. :/ I am...

Mine is 2013. It actually falls in the VIN they described in the TSB.

Cool, I will try M1 0W-40 next time. I am almost at 1000 miles after filling 1QT. So for update on this topic, I have tried HPL 5w-30 for apprximately 2600 miles so far. My first check oil light came on 1650, and second one after filling 1 QT might come in 100ish miles (1000 miles currently)...

Update: I did an oil change with 5 Qt HP Engine OIL 5W-30. I got my low oil engine light at 1650. I added 1 qt again. I will change the oil filter.

Update: As I mentioned earlier, I used YAMALUBE ring free (2500 miles ago). I used 6 oz for entire tank, and then another 6 oz on empty tank. It seemed to have done something as my low oil light came on around 1900 mile mark. Then I used Rislone engine treatment (500 ml) and got low oil light...

I have already replaced PCV valve 2 years ago. I check oil every few days out of curiosity.

Thanks for clarifying.

Thank you everyone for the input, I appreciate it. @SubieRubyRoo I will try your suggestion and report back. Regarding this: "There is a Gumout AIO in a metal can that says it’s ok to use in crankcase. You could try MMO as well if you’re desperate, but in reality your best bet is to buy a...

Yes, I have been using 5w-30 lately. I used 5w-40 for rotella t6 experiment. Can you please provide more context on this liquid? I know nothing about it. Thanks

Okay, I will try it and see how it goes. That's how I am seeing this issue too. It'd be great if I can address the issue, if it doesn't work, that's fine too. It'd be nice that this oil burn issue doesn't worsen either. What are your suggestions for trying a few things? Thanks!

So do you recommend doing an oil change with all HP engine oil, or just 1 quart, and keep adding 1 quart until all 6 quarts are used, with maybe filter change in between? Do you recommend any particular oil...

I drive about 15k a year, probably more now since return to office. lol I have been pretty good with checking as frequently as possible. I never drive the vehicle more than 50 miles or so after getting the light. However, I was just curious if this is something that can be solved by using...

Thanks everyone for the input!! I was thinking if there is a way to at least get back to 1 qt/3500 mile? I get low oil light at the worst time, and I hate how I have to add a quart per 1300-1400 miles. It's a waste, and inconvenience. I have tried T6 5w-40 in an effort to see if it reduces the...

Hi Everyone, I have a 2013 Subaru Outback 2.5L that has developed oil burning issue. I purchased this vehicle at 105k miles about 2 years ago. My first low oil warning light came on at 3500miles. The manual suggests 7500 miles; however, this early generation of FB25 engines were notorious for...