Not sure what smoking a blunt has to do with the oil in your motor haha. However if you've done any significant reading here or on the internet you'll know that our motors are very prone to oil consumption. The rings Nissan used are crap, the problem is more pronounced in the 05/06 6MT sedans and coupes and in the 07 coupes. BUT a lot of the 5AT models of the same years also had it and it gets worse as you rack up the miles. Catch cans catch very little blow by so don't expect to see any significant accumulation even with a vented can. And with the OC issue you'll never see smoke coming out of the rear unless it's really bad.

I'd recommend getting a proper oil change ASAP and checking the oil every week for a while to see exactly how much you're losing. Also get the car on a lift or jack stands and go over the motor from top to bottom and see if it's leaking oil anywhere. One last thing, pull each spark plug and check to see if you have an accumulation of oil in any of the 6 spark plug wells. If you do have any oil in them your valve cover seals are going bad and leaking oil which means you'll probably need to replace the valve covers. GL and keep us posted on what's going on.

 

You'll never get any better advice than what you're reading here! ^^^^ Also check your PCV, clean it with Carb cleaner and shake it until it rattles then clean and reinstall! If it is defective (dirty and never been cleaned) it might cause some of your issues!
Gary

 

 

 

 

2 things concern me that need to be addressed. First of all find out where the coolant is going. It's a sealed system like the AC and for it to be missing it has to be leaking somewhere. Do a pressure test first to see if you can find any external leaks, this is a critical diagnostic test. If you have none then it must be leaking internally which will cause a mixing with oil and eventually an engine rebuild. The most likely cause of this issue would be a failing head gasket. Second what's on the ground under the exhaust tips? If it's just water condensation that's totally fine but if it's oily you're probably screwed. Sorry to be so blunt but that's the reality of the situation.

 

How many miles are on the car? When you removed the coils from the spark plug wells did you see any oil inside the well around the spark plug? If no, your spark plug well seals are fine so no issues there, you will typically have a smidge of oil on the threads when removing the spark plug from the head (pretty common) but if it lots of oil like dripping off the plug then you have a problem. As far as the electrode is concerned, a yellowish brown color is normal. When is the last time the coolant system has been flushed and coolant replaced? Do a pressure check for leaks on the coolant system, the overflow canister could be dry rotted and cracked, pin holes in the radiator, leaking hose under pressure and you may not see the actual coolant leaking while you are driving and its either getting on the exhaust and getting evaporated or something along those lines. Also could have a failing head gasket and the the coolant could be getting out via exhaust as well, check the oil to see if its milky. Most radiator shops can do a pressure test for a small fee and it would be worth it to know where the leak is and hopefully it is not a major issue. GL and keep us posted.