87－91 91－96

crrllong

87 AKI (Anti-KnockIndex) ＝91(Research octane number).

91 AKI number＝96 (Research octane number ).
% g! n* C* |# e+ S2 {
4 S, J$ V2 m0 [' j5 A) }4 c+ ?这两天天气好给车换换机油，查了查车的手册。看到了汽油的标号的解，这里用的是汽油的防爆值，国内用的是辛烷值。

铅是很好的防爆剂，不加铅了。加的是什么呢？

kingsnake

這也不對。
# y, u4 D5 K1 b0 g- H* ^/ |- I國内的 AKI= (RON+MON)/2。
這裏另有一種計算方式。

crrllong

MON 是什么？

FUEL RECOMMENDATION
  r+ {# v# b2 S" UUse unleaded regular gasoline with an octane
rating of at least 87 AKI (Anti-Knock
- {  }* W- O% g/ J! H& g. d+ MIndex) number (Research octane number
91).
. G$ j3 u% U+ R9 n/ d- `* t* iFor improved vehicle performance,
9 a0 a: `% w7 A0 z, `3 U1 GNISSAN recommends the use of unleaded
9 C- C; b2 [# Ipremium gasoline with an octane rating of
at least 91 AKI number (Research octane
" T- z/ r& Y2 D+ t0 snumber 96).

kingsnake

MON Motor Octane Number.
Measure under more severe condition than RON. e.g. higher revolution, controled temperature etc. Number usually 8-9 units lower than RON.