And which should I get?
Prices range from $123 wholesale at the dealer, to $92 for a Hansa, to $14 for a Metrix, to $32 for a Behr. I think I can rule out the Metrix, but what has been your experiences good or bad on the others? I kind of feel comfortable about the Behr brand, but that huge price difference worries me. Sometimes you do get what you pay for.

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Len
'59 220S Cabriolet-SOLD and living happily in Malta
'83 240D 351,500 miles original owner-SOLD
'88 560SL 41,000 miles - totaled and parted out
https://sites.google.com/site/mercedesstuff/home
'99 E300 turbo 227,500 miles
'03 SLK320 40,000 miles - gave to my daughter
'14 Smart electric coupe 28,500 miles
'14 Smart electric cabriolet 28,500 miles
'15 Smart electric coupe 28,000 miles