| This is an experiement for me. I used to use the old Platinum core Bosch plugs. They posed no problem to my block. I put over 50,000kms with Bosch Platinums. I can proove that they do no harm to your engine because when I took my block apart and took a look at my heads, I saw that combustion was performed normally (each cylinder had a slight brown tarnish indicating proper spark delivery with no over-heat condition) So the experiement remains... Don't believe what people say until you see someone who has credited evidence or until you do it yourself. Will the +4 be an improvement..? We'll see! |
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