Not a big problem, but Estrella German maintenance book report NGK DR8ES as std. plug. Other Kawasaki info reccomendation are for NGK DR9EA.
From the experience of the estrella owners, which one is recommended?
I know that 9 it's a little coldest and as per the NGK specs the difference between last letters A and S is the center electrode design (A=special design - S= 2,5 standard)
I wonder if the 8 suggested in the German manual is due to the due to the colder German temperatures, certainly colder than Italy .
Someone experienced iridium spark plugs type?