Although you can buy stainless steel wheel bolts as after-market items, you do need to be certain that they will do the job. Stainless steel generally does not have the torsional strength required for the job and that is why Mercedes-Benz recommends only heat treated or cold-forged steel...
Recommended ATF changes - a shifting scene.
Once upon a time the auto-trans was "sealed for life". No need to change your ATF Sir - it will last forever.
A couple of years ago: recommended changes every 10 years or 100,000kms.
Then shortly afterwards: recommended changes every 6 years or...
Oh dear - another of life's little trials! The good side is that another tank is not made of "unobtanium" so your beautiful diesel will live to tell the tale.
Not quite Car of the Week so much a Cars of the Week from Monaco. Please note the Australian bodied Rolls-Royce Phantom
https://www.mtcc.mc/portfolio/rolls-royce-phantom-i-coupe-martin-king/
Regards,
Brian
Read your story so far on your other site- what fun! (Perhaps not). In my opinion your 240D is a very special car so the efforts will not be wasted.
Regards,
Brian