Regular vs Premium
#1
Regular vs Premium
Just curious....
Would there be much of a difference in using the premium (91) over the regular (87) in my 96 Si (EX)? It's pretty much stock except for the CAI with K&N. Any advantages or disadvantges of one over the other?
THNX
Would there be much of a difference in using the premium (91) over the regular (87) in my 96 Si (EX)? It's pretty much stock except for the CAI with K&N. Any advantages or disadvantges of one over the other?
THNX
#2
RE: Regular vs Premium
Octane ratings are pretty much just numbers correlating to detonation resistance. If you have 87 octane, you have an 87% octane rating with a 13% heptane reading. Heptane burns fast, Octane doesn't. If you have more octance, your gas burns "slower" on the combustion cycle. If you run 87 octance in a car that needs 100, you'll get detonation because the fuel is burning before it needs to, in essence. The basic rule is that the higher the compression, the higher the octane needed to resist detonation. I've seen built, boosted cars gain quite a few poines after swithing to race gas, but those are tuned, turbo'ed and street (il)legal. I wouldn't recommend switching gasses necessarily unless you have a real reason to.
#10
RE: Regular vs Premium
Diesel is too thick for your fuel injector to spray. But diesel does resist detonation more than gasoline. Typical compression ratios for diesel engines are in the 20:1 range.