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Old 11-14-2018 | 12:09 AM
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Weird oil burning

Hi guys. Have been a ghost for few years. Got my rx8 5 years ago. Learned a lot about it. It used to be gray and black and this is what it looks like now.



She is still on her original engine. Daily driven even in winter. Currently 146k miles and counting. Compression is not the best, but it’s okayish. Recently went fron NY to Texas and back. So my question is: she never in her life burned oil. Oil changes were done 1500-2000 miles. The only oil she burned was from sohn adapter. On a way back from Texas, I stopped at a gas station in Tennessee. Going into gas station, I hit the bottom on one of those metal things through which they fill up gas. The square one. Then I noticed that almost all of her oil was gone. Thought maybe I hot oil pan, but there was no pool of oil. Moving on. When I came to NY, I went to a shop to check for leaks. The bottom is dry. And so she has been religiously burning 4 quarts of oil in about 1000 miles. So now I don’t even have to do oil change since I always add fresh one. All I have to do is change a filter lol. I started feeling vibration under my feet where clutch is. So could something have moved? It started taking her longer than usual to start and I have no idea where oil is going. The hit was on a bottom of the body panel. Scratches there but nowhere else. So could this hit cause some kind of a shock to move something that made her “burn” oil all of a sudden. And more than she is supposed to. And the weird part is that she never burned oil before the hit. I did drive around with front eccentric shaft seal leak for 3 years until I got it fixed in a beginning of a summer. Then, my oil pan seal started leaking a bit. I fixed that the day before I left Texas which was in beginning of September. So could it be that now that everything is finally sealed the way it’s supposed to be, she decided to start acting like a rotary and actually burn oil. But she is burning too much. Car has BHR coils, aem intake, upgraded starter, exedy clutch with BHR lightweight flywheel and act counterweight, gutted cat since april, sohn adapter since 2015, mishimoto radiator, low temp thermostat, new waterpump and all of the hoses in engine bay were changed summer of 2017. Oil used: mobil 1 10w30. If you think that what is going on is normal, then my question is why was she not burning oil for 4 years and only started in September. I’m at loss here.
Old 11-14-2018 | 01:34 AM
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was the sohn installed correctly? oil burn rate relates to rpm (iirc) changing your oil every 1500 miles wont burn much
Old 11-14-2018 | 02:39 AM
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That's definitely not normal. You must be leaking out of somewhere...

You have SOHN kit, so why are you burning engine oil at all?
Old 11-14-2018 | 07:03 AM
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Originally Posted by 200.mph
was the sohn installed correctly? oil burn rate relates to rpm (iirc) changing your oil every 1500 miles wont burn much
yes, everything was installed correctly
Old 11-14-2018 | 07:04 AM
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Originally Posted by UnknownJinX
That's definitely not normal. You must be leaking out of somewhere...

You have SOHN kit, so why are you burning engine oil at all?
I’d like to know that too. No leaks on the bottom. Dry as f***. I’ve been trying to figure out where it can all just “evaporate”
Old 11-14-2018 | 08:06 AM
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Are the spark plugs oily? Is it barfing oil into the intake?

If it's not leaking, it's going into the combustion chamber. There aren't really any other options. I would be surprised if the hit caused the issue, could be a coincidence.
Old 11-14-2018 | 08:58 AM
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Originally Posted by Loki
Are the spark plugs oily? Is it barfing oil into the intake?

If it's not leaking, it's going into the combustion chamber. There aren't really any other options. I would be surprised if the hit caused the issue, could be a coincidence.
Spark plugs are dry and no oil in intake. I also have a catch can. I was thinking that it’s leaking into housing but where is it going from there? Burning? Idk maybe it was a coincidence. But going from no oil burned to all of it burned? So weird
Old 11-14-2018 | 09:23 AM
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Yeah it would be burning. Is the back of the car unusually sooty?
Old 11-14-2018 | 09:38 AM
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Originally Posted by Loki
Yeah it would be burning. Is the back of the car unusually sooty?
what do you mean by that? Like if I have dark smoke coming out? No, it’s white but only on start up a bit or if I decide that I want to shoot flames. I get a bit of smoke before the fire comes out lol
Old 11-14-2018 | 10:00 AM
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Oh I guess it will be sooty anyway then. I was asking if the rear of the car has soot/greasy residue on it from burning so much oil. It settles on the paint.
Old 11-14-2018 | 11:38 AM
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Originally Posted by Loki
Oh I guess it will be sooty anyway then. I was asking if the rear of the car has soot/greasy residue on it from burning so much oil. It settles on the paint.
well my wrap is discolored from all the flames and pops. But that’s about it
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