Seotaji

In an engine that is deisgned to run 87 octane,

will 93 octane burn cooler?

HELP?

NsX Pilot

i dunno....what makes a bigger bang a fire cracker or a m-80 ?

ChucksCL-S

No. The only aid in this situation is that premium fuel often comes with alittle more fuel system cleaner type additives (like Techron) but otherwise would be a waste of money. Most heat is lost thru the water jacket and the spark plug, the oil and the air. Concentrate in those areas to reduce heat.

randomwalk101

Additives are present in all types of fuel. The difference in different grade of fuels are the amount of octanes...higher octane rating burns SLOWER than lower ones..thus prevent detonation (pinging) in highly tuned, timing advanced engine.

Ali

higher octane burns hotter not cooler...

AcuraTLFan

Ur question is rather ambiqutous.

1) 93 octane will not burn cooler nor hotter than 87 octane. They will burn "THE "same temp.

2) 93 octane will burn "AT " a higher temp than 87 octane. In this situation 93 octane will burn "cooler" then what it was designed for.

There will be NO advantage of using 93 octane in a car that designed for 87 octane.


Octane is just a rating. Since TL and TL-S have high compression ratio, 9.8:1 and 10.5:1. this meaning that the volume in the cylinder will be compressed 9.8 times of the original volume. The octane rating of gasoline tells you how much the fuel can be compressed before it spontaneously ignites. Higher octane means that it will take a higher temperature to ignite the fuel. When you have high compression ratios like the TL, you don't want the fuel to self ignite...this is what causes pinging and knocking...however, TL have a system to control this, if you put a lower octane rating then what is suppose to have, the computer will automtically adjust to elimiate the pinging and knockiing.

tdoh

Yep...why people keep pumping 91 (or even 89, for that matter) octane gas in a car that only needs 87 is beyond me. If your car (specifically your engine) is in great running order, putting anything higher than 87 in a car that doesn't require more than that is a waste of money. But hey, it's your money...but to say that you can tell the difference--if you can, assuming that you pump the same brand--well, sounds like you need a tune-up, if not at least a timing check.

IXLR8TL3.2

actually i've read on other boards that Honda engines with out VTEC are designed for 87 and VTEC engines are 89.. like where i live in PA the grades go 87 89 93 94

jean

But if yor get your hands gaz-ohol - up to 8% + ethenol- ( still with an octane rating of 91 +)... it will burn cooler.... just because of the alcohol... (readely available at McEwen in eastern Ontario..)

miroku

can our TL use 89 fuel?

AcuraTLFan

The octane that your car uses has nothing to do whether ur car has vtec or not....depends on ur compression ratio. Vtec engines have higher compression ratio therefore requiring higher octane. If you look at the Acura RL, it DOESN"T have a VTEC engine but it requires octane 91.

Yes you can use 89 octane on the TL, but it is not recommended....the car will adjust to the lower octane, constants use of lower octane can damage ur engine, you will notice a decrease in performance.

Seotaji

Sorry,

My question had nothing to do with the mechanics of a TL.

I was just curious, since I couldn't find anything about it on the internet.

Thanks guys,

You've helped me figure it out.