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View Full Version : 2004 745Li Gas question?


BEEZ
01-25-2006, 06:13 AM
What is the preferred gas for this vehicle. I purchased last Saturday and one of the Sales associates informed me to use Regular and another told me to use at least Super. I already know regular is not going to work out because I put regular gas in and it seemed to reject it as its been jerking when giving it gas. I think im just going to run the gas out and then just use at least Super, but opinions are welcomed.

kd2789mo
01-25-2006, 08:35 AM
What is the preferred gas for this vehicle. I purchased last Saturday and one of the Sales associates informed me to use Regular and another told me to use at least Super. I already know regular is not going to work out because I put regular gas in and it seemed to reject it as its been jerking when giving it gas. I think im just going to run the gas out and then just use at least Super, but opinions are welcomed.
Minimum 95 octane (most often referred to as "premium"), it's in the OM and on a label inside the gas filler cap door.

BEEZ
01-30-2006, 01:22 PM
Minimum 95 octane (most often referred to as "premium"), it's in the OM and on a label inside the gas filler cap door.
Thanks a bunch. i had to run the gas to 0 for it to run right after I refueld with premium

lizarraga745li
06-17-2008, 03:59 AM
try too use minimin 95 octane, samething happent too car stat too jerking when giving gas, never use regular gas not goodddd at allllllllll.

jgriffith007
06-17-2008, 04:33 AM
Must be nice to have 95 octane. Our highest in Indianapolis is 93.

745ByMySide
06-17-2008, 05:54 AM
He means minimum 91 :tsk:

Playdrive4me
06-17-2008, 06:51 AM
I was about to say, 95 is 5 away from race fuel...

gassy
06-17-2008, 12:02 PM
Balderdash! I've been mixing premium (93 octane) with mid-grade (89) for several months, and there is no performance issue at all. When the tank gets to about half, I fill up with the opposite of what's in there.

Djpeak10
06-17-2008, 12:10 PM
Balderdash! I've been mixing premium (93 octane) with mid-grade (89) for several months, and there is no performance issue at all. When the tank gets to about half, I fill up with the opposite of what's in there.

All for 4 bucks:dunno: Seems silly to me!

dfauerbach
06-17-2008, 12:33 PM
Minimum 95 octane (most often referred to as "premium"), it's in the OM and on a label inside the gas filler cap door.

where are you guys getting 95 Octane? Highest I can get in NJ is 93

BmW745On19's
06-17-2008, 12:35 PM
All for 4 bucks:dunno: Seems silly to me!

+1

That's a great way to clog your injectors and cause carbon-buildup. :thumbup:

If you're keeping your car for 6 months or more, don't be cheap and spend the extra 4 bucks at fill up and get premium.

Mikey83
06-17-2008, 01:52 PM
haha I filled up with race fuel once when I was coming home from a road trip, I was getting 10.5L/100kms

http://img299.imageshack.us/img299/9123/img00032ig0.jpg

DragonSlayer
06-17-2008, 02:21 PM
haha I filled up with race fuel once when I was coming home from a road trip, I was getting 10.5L/100kms


If my calculations are correct, it's about 22 mpg which is a little bit better than my 91 octane which is pretty much what's available here in the bay area. I get about 20 mpg myself freeway and city combined.

csmeance
06-18-2008, 07:47 PM
BMW requires you run premium fuel in your vehicles for numerous reasons. One is kock, the compression ratio of the 750LI is 10.5 to 1 which is high. Running regular fuel will cause the car to retard the timing to prevent knock, but since gas looses octane while sitting there, it can come to a point where knock cannot be avoided and will cause damage to the motor. Second of all, running regular in a high compression motor causes timing retard, thus resulting in less power and the car running rough (why would you pay 80K for a BMW that runs rough) thus resulting in an unhappy customer and also low MPG, more fuel for the same power.

Also theres the other stuff such as dirty fuel injectors, and increase emissions.