Supreme Vs. Regular...?

Question

What are the advantages of using Supreme gasoline? I understand that the octane rating is different but how is that a plus? What does it affect?

Also, does it matter if the two are mixed? If you think about it logically, gas stations that have one hose for the 3 different types the person before you most likely filled with regular and when you first start pumping your getting the left over regular is the hose regardless of what gas you choose.

Answer 1

i own a repair shop and i get asked this a lot ,no it don't hurt to mix them together and the difference is in the octane rating ,some cars say they need more octane to run on,but in fact they have done a lot of test on this subject and even the ones that say they need more octane to run good and get good mileage,will run and perform as good on regular gas as they will on high octane gas,you can try it in your car and if you don't like it you can always add back to it later,but most of my customers that have used the cheaper gas,say they cant tell any difference in it at all,and neither can i, i use in in my truck and its is supposed o have the good stuff in it,and it does just as good on the cheaper gas ,and you wind up saving a little bit on a fill up,and a lot in the long run but it does not hurt to mix it at all,I'm running half e-85 in my truck now and half gas and it runs better that way than it does on strait gas,and it performs better also,try it sometime it wont hurt anything to try,good luck hope this helps.

Answer 2

You bring up a good point. I buy supreme all the time only because my darn car requires it. I doubt the few ounces of regular will affect my car though... My next car will be regular unleaded only!!!!!

There are no advantages of using supreme unless your car requires it. The middle octane is just plain highway robbery from the gasoline companies. Most people like my mom believe in the middle grade and I tell her she is stupid... Supreme is made for performance cars as the engine is built to run on supreme. Cars that only require regular unleaded are built to run on regular and I have read somewhere that putting supreme in a regular unleaded gas tank can hurt the engine even more, just like putting regular in a supreme only car....

If your car only requires regular, just stick to it....it is much cheaper in the long run and you won't feel a difference. It is all in your mind. I have read so many magazines stating this ; )

Answer 3

The difference between supreme and regular gasoline is its octane rating. The octane rating of gasoline is a measurement of its ability to resist engine knock. Engine knock results when the fuel/air mixture ignites before its intended igntion point via the spark plug. This pre-igntion cause the noise you hear commonly called "spark knock". Most vehicle engines are designed to run well on regular fuel and unless the manufacturer specifies otherwise, the use of supreme fuels are a waste of money. Hope this helps!

Answer 4

some makes require higher octane gasoline that others.. the mfg will require the supreme if you buy one that it is designed for.. most cars will run just fine on regular gas.. high powered engines need more octane for a smooth fuller burn with less carbon deposits.. and some of the more expensive cars catalitic converter requires more octane.. but for the average indivual.. use regular unleaded.. but every once in a while it would not hurt to run some higher octane in it.. the higher the octane the cleaner the burn and less carbon deposits.. other than the price.. thats bout the only difference.. just check your owners guide.. and follow what it says..

Answer 5

Octane rating is used to tell you how long the fuel will burn for. Higher performance engines light the fuel air mixture sooner and need a longer burning fuel. There is no advantage in using a higher octane fuel in a engine that dose not call for it. If it dose need a high rating you can tell the difference i had a mustang and it ran very poor on low octane fuel.

Answer 6

If your car owner's manual does not call for "supreme" there are none. if it says use regular - use regular. "supreme" grade gasolines are formulated to burn slower and resist detonation and possible pre-ignition in high performance engines. they have higher compresion ratios to burn the "high octane" fuel properly. the higher the octane rating the more you can compress the gas before it "detonates" - which means "explodes violently". That is when you get a "knock". ask a simple question - - - - .

Answer 7

Regular is better than supreme, the higher octane is bad for your catalytic converter. There really isnt any difference in performance from 4 octane points.

Answer 8

No advantage unless you have a vehicle that has been modified or specifically called for by maker.
They mix with zero problems.
Most 87 octane is actually 89 anyway.
93 octane is overkill for most all cars.

Answer 9

Use what the owner's manual calls for. The amount of gas left in the hose isn't much at all, so it's not worth taking that into consideration. Don't waste the money, if you don't need the extra anti-knock compounds then why buy it?

Good luck

Answer 10

supply conventional gasoline a try to hearken to to your engine, extraordinarily once you're accelerating. If it sounds a similar, you will shop money and get a similar consequences with conventional gasoline. in case you hear greater knocking and/or pinging than you probably did with the top type, then change lower back. meaning that the gasoline isn't burning thoroughly and that's strictly what the ingredients interior the top type are there for. Sorry to assert that for many vehicles that run nice on conventional, the greater $$ for top type are a waste.