When any place besides the stealership takes any of my cars into the shop, they have me there, and they follow my instructions...
The local tire shop is ok if the owner is there, he owns a few fancy cars, and knows them inside and out... He restores old bimmers as a hobby...

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All it takes for evil to prevail is for good men to stand by and do nothing.

Too many people tip toe through life, never attempting or doing anything great, hoping to make it safely to death... Bob Proctor

'95 S320 LWB
'87 300SDL
'04 E500 wagon 4matic