what brand of gasoline do u use?

I have heard that the newer cars computers actually detune the engine if you run a higher octane that is programmed into them. Anyone else heard this?
 
no, that's not true, higher octane contains less actual energy so if you don't have to use it, don't, however if you run lower octane gas than what is required for your car, most modern cars have very good knock sensors, so they will have the ecm retard timing amoung other things to prevent engine damage, and thus less power and performance
 
i only use shell, and shell optimax at that 98 ron octane. wish we had 100 ron like japan.



i used to use normal 92 ron unleaded, switched to optimax and the camry flies
 
Esso (Exxon) just downgraded their premium to 91 here, and that's the best we have available to us. Shell burns cleanly, but didn't feel as powerful as Esso 92 did. I guess they're all the same now.:(
 
man, 91 premium.



how do they have the hide to call it premium at 91, reg unleaded is 92 here. and in my car i cany use anything less than 92.

Thank my lucky stars we have 98 ron, go Shell Optimax
 
This side of the pond i get the cheapest.and the cheapest is around 75-80 pence per litre.Thats about $1.10 per litre:angry
 
man, 91 premium.



how do they have the hide to call it premium at 91, reg unleaded is 92 here
Click to expand...

Be careful - the US has a different system for calculating the ratings of fuel - I think you will find they are all about the same
 
There are 50 responses in this thread, and most of you are passionate about the brand and octane that you buy!



I’ve always thought (got my first driver’s license in 1949) that there is little or no difference between brands and that using an octane higher than the minimum octane to avoid pre-detonation under heavy load was useless. I guess that I’m full of misinformation!



BTW, my father knew a guy that knew a man that in the late ‘30s invented a carburetor that gave 50+ miles per gallon - but shortly after attempting to market his new invention he fell asleep at the wheel and was killed in the accident, and all of the design info for the new carb was missing from his office.
 
jcattarulla said:
Hey, some people like Coke, some like Pepsi, right? I work in advertising and marketing, so I am part of the problem.



But I hate to break it to you: gasoline is gasoline is gasoline. I know many executives in the industry in marketing, so trust me. Yes, higher octane is better for high-compression engines, but that's about it.



Research indicates that over 90% of gasoline purchasers are loyal to one station: the one most convenient to them.



RIDE ON!
Click to expand...





SO SO TRUE



But not all gas cleaners are the same. You sould run a gas treatment threw the system every so often I like Conklin the best. Like it so much I started saleing it. But there is some good ones out there, but I have seen with my own eyes what some do and that was nothing.
 
jcattarulla said:
Hey, some people like Coke, some like Pepsi, right? I work in advertising and marketing, so I am part of the problem.



But I hate to break it to you: gasoline is gasoline is gasoline. I know many executives in the industry in marketing, so trust me. Yes, higher octane is better for high-compression engines, but that's about it.



Research indicates that over 90% of gasoline purchasers are loyal to one station: the one most convenient to them.



RIDE ON!
Click to expand...





SO SO TRUE



But not all gas cleaners are the same. You sould run a gas treatment threw the system every so often I like Conklin the best. Like it so much I started saleing it. But there is some good ones out there, but I have seen with my own eyes what some do and that was nothing.
 
speaking of petrol.



leading up to Gulf War 2 petrol hit $1.05 a litre from memory.



1 Australian dollar = 60 US cents :scared



Needless to say i was not buying Shell Optimax Premium at $1.15
 
I'll fill up pretty much anywhere but Maverick. I've heard several horror stories, including one from someone I trust, of people getting water instead of gas when they filled up at Maverick. I don't know if there's any truth to them, but its enough to keep me away. But, for the usual fill-up, I go to Sinclair.
 
I fill up on either Chevron with Techron or Mobil premium. I pay about 1.73 a gallon here. Damn High compression engine!
 
Premuim Fuels here in Ohio in the U.S.A are 92 and on up. These fuels may be more resistant to pinging, and so forth but they burn cooler and faster than regular fuels do, if the fuel burns to quickly than what the engine is designed to burn, hence, detonation or pre-ignition. I've heard some misconceptions that premuim fuel burns hotter and faster. Partially true but the hotter part is not true. The grade numbers 87, 89, 92, etc... They are a measure of how resistant a certain gasoline is to knocking and pinging. 87 for example, 87% resistant to pinging. I got than info from an Encylopedia printed in 89, anyone care to correct me or is that statement still valid????



Regular Fuels here are 87/89, I RARELY see 91, 88, or whatever. I use Sunoco 87 in my Ranger, runs great with it and have had 0 problems with Sunoco. Correct me If I"m wrong, but Sunoco does not import there gas, right????:confused: Because of the hotter temperatures regular gas burns at, this can help reduce carbon build up in the engine and make for a good spark for the fuel to burn. Only time I see the need to run a high octane gas in whatever, is if it's higher compression, say 10:1, or if the engine is modified to do so.



AS far fuel additives go, I laugh at them. IMHO, now this is just me ppl, none of them work for me, and when I do put them in, my MPG converts over to GPM seems like.



I take interest alternative fuels and oils as well. I would love to see the fuel system setup on a natural gas Dodge Caravan or something. GEt this, there's a kit out there for diesel trucks, you can put CORN OIL in them and it is supposed to make them more efficient, boost the gas mileage and burn alot cleaner. I would really love to see those 2 setups,,,,,91
 
For 30 years, I've driven US-made cars as a sales rep for a drug company (Yes, all those Intrepids & Tauruses in doctors' parking lots are rep cars) and have never paid attention to gas quality. Company fleet policy was "Use regular gas." All worked well.



Now that I've retired and don't get a new car every two years, I'm more attentive to keeping my own new car running "forever".



In researching fuel quality online, I found an interesting link to an article detailing the need for keeping injectors clean. It looks like PEA (polyetheramine--Chevron's Techron) is a pretty good agent for maintaining squeaky clean injectors.



With rising fuel prices, some gas companies are substituting cheaper cleaners that may cause problems down the road (all in the article).



Just throwing this out because it sort of makes sense. I'm no chemist and am have always been leery of quick and dirty fixes to engine problems.



Here's the link: http://www.babcox.com/editorial/ic/ic30336.htm



Best,

Greg
 
You must log in or register to reply here.
Back
Top