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Message: <blockquote data-quote="leynye yamin" data-source="post: 1063950842" data-attributes="member: 123148">my car originally from factory is using 10w30 petronas mineral engine oil, after that i upgrade to 5w30 semi petronas oil, the problem is after i change to semi oil and run for not up to 3k km, i feel my engine becomes very heavy and hot, not accelerating strongly,(the engine oil light is not on at all till now, touch wood!!). That makes me curious and go to check the engine oil level, to my suprise the engine level at morning decrease to half(morning cold engine)!! I was teriffied and went out with another car to buy new bottle 5w30 petronas engine to replace my half leveled engine oil. Funny thing is, after replaced with new 5w30 oil, haha i happy, thought the problem solved and went touge couse shortly after oil replacement. HOWEVER! things not as i thought, the car became sluggish AGAIN and i check the milage only to see that the car not even travelled more than 1500 km. the level drop to half again!(in morning) I thought that it is like, ok, the petronas oil no good, so i went to get another brand is penzoil 5w30 semi. This one better, 2500 km then start to less to half in oil level. I replaced my engine oil with this penzoil 3 times, all around 2500 km interval. Finally i give up and get shell (yellow bottle) mineral 10w30 engine oil， even faster, not up to 1000km less to half d. finally i get the nasa 15w40 mineral and currently oil level not less yet touchwood!! what is your idea?? normal? thx!!</blockquote>

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Why selling?

Just curious, what did you guys upgrade to? Or why plan to sell.

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