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Hey everyone, title says basically what’s going on here. I have a 2009 Toyota Corolla with the 1.8L engine and 60,000 miles, and it burns approximately 1 quart of oil every 2000 miles. It does not appear to be leaking out anywhere, so I’m assuming it’s going to be the oil control rings, or the PCV system. It burns slightly less with conventional oil, and burns more with full synthetic, both being 5w-20.
Anyone have some advice on what I should do? I’m thinking about replacing the PCV valve, but that requires taking the intake manifold off, and a few other things.
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[quote=”ToyotaKarl” post=77583][quote=”grg8888″ post=77541]I’m kinda curious how a ECM flash can change oil consumption!
Do they have some way of lowering the manifold vacuum so the PCV system sucks less hard on the crankcase?[/quote]
Since this is a VVT engine, the valve timing can be adjusted by the re-programming of when the VVT actuator activates… I am not for certain why this SHOULD help, but sometimes it does and sometimes it doesn’t….
It has been postulated that the changing of the valve timing lowers the pressure in the crankcase and temperature which helps the oil not to vaporize as much…. Don’t quote ME on that though…. 😛
If it were me, I would run 5-30…. Toyota did the 5-20 to meet CAFE standards in the US and the rest of the world runs it on 5-30….
just my 2 cents…
-Karl[/quote]
I’ll try it out, but let’s say the oil control rings aren’t seated correctly, would there be any way to re-seat them? I’d prefer to not tear apart the entire engine. I’ve seen some people spray some seafoam deep-creep into the cylinder with the spark plugs removed, and let it sit overnight. I doubt this does anything though..If it were me, I would try the 5-30 for 2k miles or so and see what happens, if the consumption gets under control, your good. I have heard of people doing a seafoam treatment to the old 1ZZ-FE 1.8 engine and delaying the oil consumption problem, but your engine is different from that one (the piston ring lubrication holes were too small and would get clogged on that engine)…. I just don’t suspect a ring issue on your engine….yet…
JMHO
-Karl
[quote=”ToyotaKarl” post=77585]If it were me, I would try the 5-30 for 2k miles or so and see what happens, if the consumption gets under control, your good. I have heard of people doing a seafoam treatment to the old 1ZZ-FE 1.8 engine and delaying the oil consumption problem, but your engine is different from that one (the piston ring lubrication holes were too small and would get clogged on that engine)…. I just don’t suspect a ring issue on your engine….yet…
JMHO
-Karl[/quote]
Sounds good. We’re the second owner to this car, the first 30K were from another person. Judging by the scratches, cracked front bumper, and other small things, I don’t think they took good care of the car. Maybe something is built up in the engine.. No idea.
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