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Maintenance, Engine & Driveline TechThis forum is brought to you by The Speed Syndicate (TSS) in Burnaby. Discussion of maintaining your engine, transmission, differentails, rear ends, and mods associated with "driveline" parts..
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NO, mid grade at best
91 to 94 considered premium
anything over 90 is premium
BTW, does your manual say use premium? If not, you don't really need it. High octane is needed if you experience engine knock or pinging. You need it if you tow stuff or if your car has been modified.
Take my truck, for example. I used 89 for a while. Each time I took the freeway on-ramp and floored it, it backfired. I go with 91 and backfire is gone, and I noticed an overall performance increase. Cars nowadays have computers and sensors that compensate timing for a range of conditions. As long as you stay within that range, no problem. People say premium is a waste of money and for the most part, it is. It all depends on your driving habits and what has been done to the engine. If you do not experience problems, save the money and go with mid grade.
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I have no owners manual so i have no idea, i did fill up a tank of 89 last night, so far i hear no knocking, i cant tell if its slower, maybe it could be a slight bit slower.. car is an is300 btw..
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yea i geuss ill have to get 91 next time, damn gas prices better not go up this summer... hmm shell has 90 octane right? i dont remember seeing any 90 octane at chevron were i always go... also does shell still not have that 10% lethanol crap in it?
yeah well some people drive far out of the city to work which easily adds up to around 400 bucks a month and it would be nice to save maybe half of tank of gas a month or something.. but i geuss thats not going to happen, o well.. and i aint going back to that FWD bullshit.. that shts no fun ill stick with the is300..
I'm not trying to be mean so please don't take this the wrong way.
There are a lot of people who drive far for work. You are no exception. A majority of these people drive economy cars which are generally FWD. You made the choice in getting an IS300; a 3.0L high compression inline-6 RWD motor. Fun comes at a cost and you have to pay for it.
Sorry if this is a retarded question, but does a Cold Air Intake count as modified?
It's technically not an engine mod, so would it still need premium?
Hell yeah. You'll need a FMIC to go with that mod or else you will blow up the tranny from all the mad torque yo!
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Fathered more RS members than anybody else. Who's your daddy?
Join Date: Aug 2002
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Originally Posted by hchang
Sorry if this is a retarded question, but does a Cold Air Intake count as modified?
It's technically not an engine mod, so would it still need premium?
It's not a retarded question at all........... well, it does involve retarding the engine's timing, LOL.
On the serious side, no. Cold Air Intake alone does very little. The car's computer will compensate for what little gains you get from a CAI.
I was referring more to mods like forced induction (turbo, supercharger), nitrous, etc.
If you combine headers and an exhaust system along with a CAI, then you might benefit from higher octane gas. It all depends on the setup and if you experience engine knock. Even if you don't experience knock, you might benefit, if the computer is compensating a lot due to whatever changes.
__________________
Quote:
"there but for the grace of god go I"
Quote:
Youth is, indeed, wasted on the young.
YODO = You Only Die Once.
Dirty look from MG1 can melt steel beams.
"There must be dissonance before resolution - MG1" a musical reference.
You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!
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