1992 Honda Prelude Si Fuel Type

This topic has 5 replies, 4 voices, and was last updated 12 years ago by EricTheCarGuy.

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February 4, 2013 at 8:37 am #498808
Jacob
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I just recently bought a ’92 Honda Prelude Si and in the fuel door it says to only use premium gasoline. It has 277k miles on it and with rising gas prices I was curious if it really mattered. So, will it hurt anything mechanically if I use 87 vs 91? I have gotten both answers online.
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February 4, 2013 at 9:46 am #498814
Hondaphile
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Does it have the H23a engine in it? If so that is around a 10.0:1 compression engine. That being said, you do need to use premium gasoline. If you put 87 octane in it, you may experience detonation and a CEL for a lean condition.
February 5, 2013 at 2:54 am #499088
college man
Moderator
you could try the lower grade.But as suggested.You may get
pinging/detonation. You may be able to go down to 89 octane.
February 5, 2013 at 11:56 am #499290
Jacob
Participant
Yes, it does have the H23A1 in it. Do you think using 89 octane would cause any harm?
February 6, 2013 at 2:33 am #499421
college man
Moderator
you would have to try it and see.You may be able
to run the lower grade if you add an octane booster
when you fill up.But then you have to add a bottle
at every tank full.
February 9, 2013 at 4:36 am #500394
EricTheCarGuy
Keymaster
Yes, it does matter.
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