Like the stuff you use on brakes?

cK

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1972 w108 4.5L & Schiebedach.

You asked what were considered the BEST for your application.. Seems that was answered by a few experienced Benz guys here.
Champs do not come into 'The Benz Best" catergory.. From my past 45 years experience , Champs don't cut it.. if you saw how many times a customer came in and needed nothing more than to dump the Champs for a Bosch, you would also be Experienced.
..but try the Champs anyway, then you too will know.

Sounds like NGK is the winner,

Thanks all,

cK

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1972 w108 4.5L & Schiebedach.