It's not worth buying grease just for this tiny job. I would just visit the service bay at Nissan and ask if they would let you have a finger full to apply to the dried and cleaned out strut top. Take a piece of greaseproof paper for that blob. In any case, it's not really necessary - just a good extra thing to do.What grease I should buy to put on the strut before putting the 3D printed ebay cover on it? Where else can I use this grease? I've never done any car DIY........ only checking fluid levels and topping up washer fluid. I would like to start doing some simple jobs (I hear brake pad and disc change are one of easiest) on this Leaf. Because EV will be less messy right?
And please don't even consider playing with your brakes and discs. Especially with your rudimentary mechanical skills. Whilst they are fairly easy jobs to carry out compared to many others they are one of the most critical when safety is required. Done professionally the costs can be quite modest because they are fairly simple but with less chance of later problems causing a ditch encounter or worse.