I watched earlier video and you wanted alternatives for e60 front bumper, as alternatives i don't know that many exist except for M sport and M5-look bumpers, I would suggest you to buy them from Lithuania , there are websites and they ship new bumpers to anywhere, price is around or less then 200 euros, it is really good material many of us use it here, it won't be painted, but if you buy M5 look bumper it wil fit bolt on , in the old bumper place , if you have any questions about e60 feel free to ask.
you can remove the valve that you turn to lower the jack. use that hole to fill it with oil, then give it a few pumps to let the air out, repeat the process until you can't get any more oil in it. you should use hydraulic oil, I've used whatever engine oil I had