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VCT= Variable Cam Timing. The engine uses oil pressure fed to a fancy sprocket and controlled by a valve to vary the advance of the Intake cam. This gives better power, emissions and MPG. The ECM reads the cam sensors to see if the advance it wants is happening. If it isnt, The ECM sets p0011 or P0021. A bad cam sensor is unlikely to cause these codes. A bad cam sensor will set a Code of the P034x flavor.
Seafoam is an engine cleaner. You add it to the oil, drive the car for a day or so, then change the oil and filter. Instructions are on the bottle. it should break up the sludge that is likely present from having been run low on oil for who knows how long, or missing oil changes sometime in the last decade. The oil passages for the VCT arent very big, and they do have screens. So they clog easily. IF they clog, no oil will get where it is needed and VCT wont work.
I know you cant really tell by the picture, but do u think that my oil pan is the reason why the P0011 code comes up, and why my murano acts really sludgy when i try to accelerate?
Sorry, I want to disagree and suggest a different course of action.
Nothing the OP has posted indicates the presence of sludge. I don't know where that assumption comes from in the post above, but it is unlikely to be the case.
Seafoam has more than one use, and its typical use is in combustion chambers to reduce carbon or other deposits on valves and pistons. For that application, it's normally fed into the intake plenum and burned while the engine is running.
Personally, I would not add anything to the motor oil that thins it and then drive the car, since driving exerts load on the engine. Seafoam is a thin material which can compromise the oil film and oil chemistry and might result in damage to the engine. When you add anything to oil that will thin it, driving the vehicle and putting the engine under load is a very bad idea. Typically, when you add cleaning/thinning agents to oil, the instructions specifically tell you just to run the engine in the driveway...not drive it.
If you have been running synthetic oil, then formation of "sludge" in the oil is EXTREMELY UNLIKELY. Synthetic oil is highly resistant to building deposits or "sludge" in the engine. In that case, using Seafoam in the oil is meaningless and a waste of money, as well as having potential to cause engine damage due to compromised oil film. I just don't see this as a desirable course of action.
If I did determine that I had a sludge problem (something that I have seen only once in 40+ years of driving, but maybe that's because I change the oil...) I would remedy it by using an internal engine oil cleaner - NOT driving the car, but using it according to label instructions by idling the car in the driveway - and then doing multiple oil changes in quick succession. Using synthetic oil, that process will absolutely clean the oil circulation areas. In the case where I did experience this, I used Gunk brand engine cleaner (comes in a 1 quart can) according to labeled directions. I have also used Gunk just for insurance when I was changing engines from petro oils to synthetic, which I have done with engines which have had up to 100K miles on them at the event.
But there is no evidence that this problem even exists. I strongly recommend that the OP not add Seafoam to his oil and then drive the car for any period.
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