| 
  鲜花(0 )   鸡蛋(0 ) | 
| NGK、BOSCH、DELCO is all ok for normal use. but if u want high performance like high hp cars. use NGK 白金, Bosch 白金 2+ or above. since they produce stronger spark, specially when the rpm is high.) O/ ]4 }6 @' R" H+ z5 Q$ T" } basiclly the more expensive plug produce higher performance and reliability. i am using Bosch 白金 2+ for my 2000 civic, since it is the highest grade i can go, Bosch stopped to produce any 4+'s. .........but in my acura, i'm use 4+, to maintain the performance i needed.8 ]& n8 P$ J) \" j
 + M9 P4 |* T& r" L1 w4 a
 about" 火花塞的间隙用不用自己进行调整." u have to do it for cheap plugs, but Bosch 白金 2+ and 4+ u dont  need to do it, it is already been set. not sure about high grade NGK plugs.
 | 
 |