wat octane u put on mk1

[thangxixon]

i put 87 since it a 4age 1.6l only. i wonder if u guys get more power and drivability with higher octane
my friend alwasys put 91 in all of his car. he said "it feel smoother"
wat u guys thinkk

[CompanyFlow]

Whatever the reccomendation from the manufacturer says. If it is high revving adn high compression then it may need higher octance such as 91, however, it probably only needs 87. A lot of people put 91 in their cars and it does nothing. If the car wasnt manufactured to use anything higher than 87, then using anything higher than 87 will have no effect.

[beetus]

In australia our standard is 92 octane i use 98 octane in my car it does make a difference........... there was a presentation with 2 new v8 brand new one running regular one running 98 octane and there was a 14kw power difference at the wheels they even ran the cars to empty and swapped the fuels and it came up basically the same , so i think it does make a difference to me it makes the car just run smoother......just my 2 cents

[tHa kNiGHt FaLL]

Originally Posted by beetus

In australia our standard is 92 octane i use 98 octane in my car it does make a difference........... there was a presentation with 2 new v8 brand new one running regular one running 98 octane and there was a 14kw power difference at the wheels they even ran the cars to empty and swapped the fuels and it came up basically the same , so i think it does make a difference to me it makes the car just run smoother......just my 2 cents

wtf... 98 you getting up towards race gas... that must cost a pretty penny every fill up...

Company Flow is absolutely correct... go w/ manufacturers recommendations.

the thing is...

it can help... but at the same time can do more damage then good... octance rating is your gasoline volitility rating... higher takes longer to burn. in older car that use mechanical advance systems won't be able to compensate for this and could allow unburned fuel to enter the exhaust... running rich... and if the exhaust temp gets too high say to a faulty EGR then you could wind up w/ detonation. triggering knock sensor... then you got a engine code...

new cars the ECU control ignition... they'll just retard the timing to compensate for the longer burn rate... you might getting better gas milage but the performance you won't even notice.

if you have a car set up and tuned and requires a higher octane then yea... go for it...

everyday driver... use wha toyota says it needs....

[beetus]

our octanes in australia are standard 91, premium 95 and ultimate 98 octane............so if thats so why do thy make ocatne boost bottles? to damge our engines? i have a mk2 turbo so 98 would be alright. i find with 91 octane my car runs very sluggish 95 i put in for daily and 98 for when i want a lil more go.......from what i gathered of ultimate and th info where i am it burns more efficiently gives u more power and puts out less omissions............

[tHa kNiGHt FaLL]

no...

but if you read carefully each one of those octane boost is like only 10 percent of 1 octane... very small... in perspective.

they don't make it to damage your engine they make it cause they know you'll buy it...

and gasoline does not produce power.

air produces power... an engine is a giant vacuum... tha amount of air you can push thru there and the faster... the more performance. it burns slower... not effiecient if the motor isn't designed for it.

plain and simple.

[beetus]

the octane bottles here put it up to octane points...... your right tho i did a bit more research into it, it only increases ur maximum output when ur at the maximum out put with of ur engine..........it does seem smoother though............. normal driving it doesnt make power but the stats show for themselves

[JekylandHyde]

Originally Posted by thangxixon

i put 87 since it a 4age 1.6l only. i wonder if u guys get more power and drivability with higher octane

... only if you are having issues with a lower octane.

Higher octance is not "better."
Octane is the RESISTANCE to detonation.

That being said, you will get your best performance from the LOWEST octane you can run without seeing detonation/knock/pinging.

If you are running fine on 87, then you will lose performance by increasing octane.

[toyotaspeed90]

Originally Posted by JekylandHyde

... only if you are having issues with a lower octane.

Higher octance is not "better."
Octane is the RESISTANCE to detonation.

That being said, you will get your best performance from the LOWEST octane you can run without seeing detonation/knock/pinging.

If you are running fine on 87, then you will lose performance by increasing octane.

i read the other posts and the not-so-great information in them and was going to add this.... but was already perfectly put.....

only things i would add are:
i believe australia uses the same rating as japan, which is ron..... generally is higher than the octane ratings we use here....

running higher octane gasoline can actually hinder performance in a fuel injected car.... because the higher octane is more difficult to ignite/burn, the higher chance that (if not needed) the higher octane won't burn 100% and 1) leave deposits 2) unburned gas will clog the o2 and slowly hinder gas mileage and possibly performance (to a point though, since o2 is ignored under wot in an mk1)

[CompanyFlow]

Do you really think that 16oz. of "octane booster" is going to raise 12 gallons of gas to 101 octane? I doubt it would raise it even one octane point.

[Red October]

In an older car you need to stick to what the mfr. recommends.
Every once in a while (2-3 times a year) run it down really low and fill up with the highest octane you can get that's not racing fuel from someplace like Shell or Mobil because they are detergent gasolines. This is a good time to do an "Italian Tune-up" (Wide-open throttle acceleration to Redline) a couple times. This will clean out crap from the motor. More frequently it will do harm and not good.

[90GSMitsu]

Originally Posted by CompanyFlow

Do you really think that 16oz. of "octane booster" is going to raise 12 gallons of gas to 101 octane? I doubt it would raise it even one octane point.

I have To Agree with you, in SLC the Ocatane boosters that are here say will improve ocatane level by one point in the 6oz bottle.

6oz + 2 Gallons gas = 1 octane point higher

so its kinda a waste of money.... cause you pay two bucks a bottle.... and that could almost get ya a gallon of gas... kinda a waste

[tHa kNiGHt FaLL]

Originally Posted by 90GSMitsu

I have To Agree with you, in SLC the Ocatane boosters that are here say will improve ocatane level by one point in the 6oz bottle.

6oz + 2 Gallons gas = 1 octane point higher

so its kinda a waste of money.... cause you pay two bucks a bottle.... and that could almost get ya a gallon of gas... kinda a waste

and thats if its 2.00 a bottle.... here its 3 and a half...

[90GSMitsu]

Exactly, so 91 is the highest here. so i think 91 will be the best i get unless i pay for race fuel.

[beetus]

lol 91 is the lowest here