My bad, I was rushing. Still am really, but I believe our PCV is called an EGR now (not the VCT, which sits right next to it and a stuck VCT causes timing to be too advanced at idle, which results in car running good but engine rough or stalling when stopped). But the main thing is our PCV tube has a ball or cone inside that uses a spring to close. When they stick open you get more oil/water vapor drawn into the intake system, causing the engine to use oil. A catch can is spliced into the hose after it attaches to the PCV and before the hose attaches to the intake (behind the throttle body). A catch can pulls oil out of the vapor and traps it so the engine doesn't burn the oil. Burning oil vapor lowers octane values after metering, in other words can be harmful to the engine, and it causes fouled plugs and sticks to intake manifold and charge motion valves (bottom of the intake). The most likely cause of excessive oil loss is usually the PCV vent tube stuck open and the vacuum from the engine drawing out too much vapor at higher the idle rpms.
Still not perfect, but hopefully helpful.
Thank you for clarifying and your suggestion
I'm thinking for your driving that is not too much consumption (more than I'd like) but, you should check it more often
the std for too much is over 1 qt per 1k miles (yeah that is a lot) I'll assume past the 5/60 wtty so I won't give any dealer hints. I'd stick with 5-30 but then I'd also slow down.....
Glad to hear you don't think it's too much consumption. I will be sure to check it more often! Yeah it's out of warranty. Slowing down is easier said than done... This car is just too much damn fun! Flooring it literally never gets old.
VCT solenoids actuate your cam phasers to control valve timing.
If one or more isn't working, I would think you should be getting a p0340 code. Since you didn't mention any trouble codes...
Oil consumption related to valve timing is as such;
Late valve timing will keep the intake valve closed too long after the intake stroke has started, and will increase the vacuum in the cylinder. The high vacuum will have a tendency to suck oil up past the piston and rings into the upper part of the cylinder where it will be burned.
Again, you are reporting that the car performs perfectly & throws no codes. I wouldn't think this is the problem.
A stuck PCV valve could cause increased consumption & it's easy to check. Always start with the easy stuff first.
If you are driving the way you described on a daily basis, I would suggest a higher viscosity oil. Track Pack mustangs are recommended to use 5w-50 full synthetic. This is what I use and have no consumption issues with performance driving. Granted I don't drive that way on a daily basis. If I did so, then increased consumption wouldn't surprise me at all.
Disclaimer: This is just my opinion. I'm not an expert.
Yup no codes whatsoever. Thanks for explaining things, I always love learning more about my car. I noticed you have a 2014 GT. I believe the 2011's and 2012s have oil squirters the 13s and 14s don't. Would it still be advisable to go all the way up to 5w-50? Also, I live in sunny So-cal however I love snowboarding. Sometimes when I park the car on the mountain for the day temperatures can dip to 20 degrees or so, not much lower than that however. Is it still advisable to use 5w-50?
I've owned 2 Coyote cars with zero oil usage and I credit that to them being broken-in hard. If a Coyote is babied during the break-in period it will use oil.
Possible. The previous owner did a great job of scratching the wheels on the curb. One could assume if someone can't freaking park, they wouldn't be romping on it too much.
Thank you all for your detailed responses
2001 Mustang GT - Crashed (Other person's fault) Stock.
2003 Mustang GT - Sold
Lowered, Flowmaster catbacks, CAI + Tune, 5% tint all around, American racing wheels.
2005 Mustang GT - Traded in
"Performance" spark plugs and ignition coils, 5% tint on back 3 - 20% on front two, 20 inch silver AMR wheels
2011 Mustang GT - BEAST
5% tint all around. 2014 GT premium wheels. Roush axleback