4pumpedCL

I let my girlfriend borrow my car and she accidentally filled it up with regular unleaded...but it ran fine. Does anyone know if there are any disadvantages to running that over super?

DtEW

Decreased performance. When DI cars sense any sign of pinging, ignition timing is retarded until it goes away. Regular unleaded is generally less premium than Premium (duh ), which is to say it won't have as many fuel system and injector-cleaning additives as Premium. But one tank shouldn't matter.

NOVAwhiteTypeS

in a cl-p i think you can use regular. but in a cl-s I think u need premium.

CO-CL-S

The only thing haveing an octane lower then 91 is going to do is give you less performance, as the engine sensors will recognize pre-detonation and not allow as much advance in the timeing. At least that's the short answer. One tank is not going to cause any problems long term.

Infamuz

Plus regular gas is not as refined as much as 93 octane. You have more particles in regular gas then premium. By the way Amoco kicks ass!

Kahn Man

I think it was Car & Driver that did a really good article on this a few months back. They put 87 in cars that required 93 and vice versa. They found that:

-The performance of premium cars running on regular was slightly decreased at the high end (I think they used a BMW 3 Series)

-Putting 93 in a car that does not require it is a complete waste.

Nothing we didn't already know, but they have the data to prove it all. It's worth looking up if you are really interested in how it affects cars.

kensteele

I strictly use premium unleaded. About the only time I might use regular unleaded is if I were about to run empty and there was no premium available. Once, I tried regular unleaded. Couldn't tell the difference during normal driving; however, when I really drove the car aggressively (like I normally do), the results were noticeable.

acura_service

nothin on the clp

StonedCL

iTrader: (1)

One time the gas attendent put RUL in my ride and i crashed her 5 min later.... watch out...

Blazin TL

what are the long term effects of running Reg. gas on a TL-P, i really don't mind a drop in performance, along as i can get it back when i put in prem. gas?

efx

It used to be that lower octane gas would leave more deposits on the carb, don,t how the injectors react long term. The performance issue is another thing that depends on how you drive. Better to put higher octane always if there is a question unless you drive like a grandma.

Blazin TL

yup i drive like a grandma, i should be aight, i shit to third at bout 3-5mph, as soon as the car will let me, then 4th at 20mph, n 5th at 35mph, this is while always being under 2000 rpms, i stay around 1800, i get vans getting fustrated during the accel. from 0-40 mph, then i blow by em, b/c i keep accel. to 80 no matter what road i'm on...i'm all bout savin that cheese...

dj5

Amoco is no more. BP bought Amoco and will be rebranding all Amoco stations to BP. BP also bought ARCO and Castrol.

Shell bought Texaco and will rebrand all Texaco stations to Shell.

Exxon bouth Mobil. So far they will be keeping both brands.

All gas companies trade gasoline with each other and it is shipped though the same pipeline. The only thing that makes them different is the additive.

BP/Amoco in some parts of the country sell Crystal Clear Amoco which is not traded with anyone else and is refined an extra step to make it clear.