Creaks and grunts are usually caused by spring isolators or bushings, as was stated here. Sometimes when you have a car lifted, with all compession off the suspension, and you are doing work that involves moving/jarring parts that are normally under compression, you unseat a rubber part, or knock dirt into a gap between parts. The spray lube will stop the noise for a while when it finds it's way into the problem, but it may return. If it does it even when the car is standing still and you turn the wheel, I would suspect the upper spring isolator, or the strut bearing plate as the source.