Wich are the best spark plugs for a Mazda Protege '99 1.6 LX?

G

Gerardo

New member
Boch 4 platinum
Boch 4 Platinum IR
NGK Iridium IX
NGK Laser Platinum
Dengo Iridium IK
Denso 4 Platinum

Also what is the best heat range for performance?
 
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