Anyone hear about 87 octane regular gas being able to run most luxury cars and luxury suv's with no difference, compared to premium?

 

I have not heard this. However, I owned a 2003 Acura TL Type S that recommended premium fuel and I rarely even used mid grade. I never had a problem and never heard pinging. My 05 LR3 (4.4 V8) however is the first vehicle I've owned that "requires" premium. I was told that performance and gas mileage will suffer without it so the difference in cost for using premium would be equal at best. I'm sticking with 91 or better until I'm convinced other wise. I'm currently getting 15.3 mpg city.

 

If putting good gas into your vehicle is too expensive for you then step down to a vehicle that is designed for 85 or 87 octane gas, pretty simple.

 

Don't do it! It is not worth the risk of serious problems it is 2 bucks extra per tank
just don't buy one of your gay coffee drinks one day a week

 

I tested this on a road trip recently in my 06 LR3 4.4 V8.

On the way there, I got 19.3 mpg averaging 63 mph on premium 93 octane.

On the way home I used 87 octane and got 19.2 mpg averaging 62 mph.

I will continue to put 93 in just because it is recommended and you are right to say it is not worth the risk for $2/tank. But to say that performance is decreased is not true, at least for highway miles. I have not tested it in the city.

 

The LR3 was designed to go anywhere in the world tho 99% of them wont leave the pavemt of shopping malls but really it is designed to go to all corners. For something designed to go anywhere in the world I'm sure they took into consideration that some parts of the world wont have higher octane fuels. I wouldn't tow anything heavy for long periods of time running 87 but other than that it wont have any effect other than decreased performance and to really see the diffrence you'd need to run atleast 5 or more tanks. One thing I notice the most is low tier gas to high tier gas. If I run cheap premium I tend to only get about 15.3 overall average but if I run BP or Shell I get about 16.4.

 

we just drove a lr3 from fla to texas for SCARR the whole used the el cheapo fuel and all the way back we had no issue's we were pulling a trailer and is not a stock rig and we were getting 12.8 mpg going 72 mph with a trailer ..

 

I don't think it will makes a difference, may alter your timing, but your ECU will adjust. this has been a topic on a billion car forums, and for the most part I have always seen someone say I put 87 in with no issues. my only experience is that guys/gals with cars that are turbo charged or supercharge tend to put 91 in all the time, but I assume that's for performance(speed, not MPG) sake.

 

yeah, it wont cause problems. 87 is easier to burn then 93 and the engine has 4 knock sensors to keep it from pinging. that said, it doesnt burn as efficiantly in a higher compression engine, it ignites earlier and youre left with unburnt air and fuel in your exhaust, so you end up using a little bit more fuel. with the unburnt fuel you are also more likely to cause carbon build up on your valves and in your combustion chamber. so if its not worth the extra 4 bucks a fill-up to maintain your car correctly, use 87, but dont get upset when you need to have sensors and ignition componants replaced when you get a little higher up in milage... and yes, those can be very expensive repairs

 

this is something really off that i found out.. so i was talking to the landrover dealer and they said, basically the 93 is recommended, meaning that the vehicle will run fine on 87 or the cheap gas, and they also said that thats what they put in their vehicles.... also the performance claim... i got 21 mpg on the 87, and got 18 mpg on the 93... so im confused (both times i was driving at about 65 mph, on the same highway...) ...