Bosch W225T1 is a little colder than W175T1. W225T1 is close to NGK B7HS. W175T1 is close to B6HS.
Paul
Bosch W225T1 is a little colder than W175T1. W225T1 is close to NGK B7HS. W175T1 is close to B6HS.
Paul
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