Originally Posted by mbp727' post='983809' date='Aug 20 2009, 01:49 PM

I've always thought that car manufacturers "recommended" higher octane fuel which was really a bunch of bull s***. I recall the "new lessees" meeting at lexus a few years back where the lexus rep told all the new owners that if we plan on lowering the octane we needed to bring the car by so they could reformat or flush or something like that, but going up in octane was fine with no re-anything.

Originally Posted by DRANGED' post='984291' date='Aug 20 2009, 11:24 PM

For the love of GOD why do we have another octane/gas thread??? Guys, how about we start encouraging members to use the search function instead of spoon feeding them?

BAN to everyone who perpetuated this thread!!!


SEARCH: Learn it. Know it. Live it.


https://5series.net/forums/index.php?act=Se...hlite=%2Boctane

https://5series.net/forums/index.php?act=Se...ighlite=%2Bgas*

https://5series.net/forums/index.php?showtopic=41308

Originally Posted by craigm1841' post='984050' date='Aug 20 2009, 06:04 PM

it has to do with compression and timing. octane has nothing to do with horsepower.

Originally Posted by craigm1841' post='984281' date='Aug 20 2009, 11:06 PM

ah, i drive a 60K car, i am not gonna worry about 100 bucks. for peice of mind, it is worth the $1.50 per tank. 10.5:1 is pretty decent, i would be using the higher octane, i dont know how these cars work, but if your cars timing is electronically advanced and retarded based on the the octane and/or quality of fuel, possibly determined by the O2 sensors, you could defintately see a difference in performance and gas mileage. 4 bucks a month extra on fuel is 1/200 of the cost to operate my car each month. if i really needed the money, i would sacrafice one can of soda each week to run better quality fuel through my car.

whether the argument is for quality or peice of mind, the discussion of whether or not to spend a $1.50 more each month on a 60K car is ludacris.

Originally Posted by jordan23junkee' post='985037' date='Aug 21 2009, 06:46 PM

chevron or mobile 91. wish they would bring back 92. once in awhile theres a 100 octane place on Arroyo in Pasadena I go to.

Originally Posted by e60hodzic530' post='984731' date='Aug 21 2009, 12:24 PM

thanks man..and btw go for the 335 the e46 playeeeeed out

Originally Posted by skelevirus' post='985071' date='Aug 21 2009, 10:20 PM

played out? whaaa?

Originally Posted by skelevirus' post='985045' date='Aug 21 2009, 10:00 PM

is the one lucky 16 year old your son or something?..

Originally Posted by e60hodzic530' post='984731' date='Aug 21 2009, 03:24 PM

thanks man..and btw go for the 335 the e46 playeeeeed out