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Is it ok to use NKG #BCPR5ES plugs vs. the recommended NKG #BCOR6ES. I live way far from any city and a motorcycle shop had these. The only difference is the #5 instead of a 6. Thank you!!
With NGK spark plugs the higher the number the colder it is, there's as much as +,- 150 C temp variation on the combustion chamber if increasing or decreasing the plug number..
