Avoid premium gas and Shell gas stations
#61
Contributors
Join Date: Aug 2007
Location: Atlanta Burbs
Posts: 1,871
Likes: 0
Received 0 Likes
on
0 Posts
My Ride: 08 550 Carbon Sport Almost everything factory, but no sound upgrades.
![Default](https://5series.net/forums/images/icons/icon1.gif)
Originally Posted by E92-Lighting' post='1050759' date='Nov 9 2009, 11:49 AM
dont use arco gas
E92 previous post is an example of an obnoxious and distasteful sig..
![Wacko](https://5series.net/forums/images/smilies/imported/wacko.gif)
I don't know what he is selling but whatever, there is the last place I would buy it.
sixcard
![Smile](https://5series.net/forums/images/smilies/imported/smile.gif)
#62
Contributors
Join Date: Feb 2008
Location: Fullerton, CA
Posts: 4,074
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://5series.net/forums/images/icons/icon1.gif)
Originally Posted by juventus' post='1046011' date='Nov 3 2009, 07:17 AM
Car has been experiencing rough start ups especially when car is cold. The "check engine" light comes on but after driving a couple of miles the light disappears and the roughness/hesitency resolves.
Took it to BMW and they found nothing wrong. However, they did advise me to use mid-grade gas only since there are not a lot of people buying premium because of the economy. This premium gas just sits at the gas station for ages and rots.
BMW also advised me against using Shell.
Any thoughts?
Took it to BMW and they found nothing wrong. However, they did advise me to use mid-grade gas only since there are not a lot of people buying premium because of the economy. This premium gas just sits at the gas station for ages and rots.
BMW also advised me against using Shell.
Any thoughts?
I'm not sure if it has been mentioned in previous posts, but to me it sounds like your high pressure fuel pump is on it's way out. There is a known defect with the n54 engine's HPFP. check engine lights, reduced power, rough idles and steering wheel shudders are all symptoms of a faulty HPFP. My 535i had the same problem and ended up qualifying for the lemon law. i would take it back to a different dealership and explain the symptoms. Have them check the high pressure fuel pump.
Good luck
#63
Senior Members
Thread Starter
Join Date: Dec 2005
Location: White Hall, Arkansas
Posts: 298
Likes: 0
Received 0 Likes
on
0 Posts
My Ride: Retired 2008 535i Titanium-silver with sport, premium, steptronic, NAV, HUD
Retired 2006 525i
![Default](https://5series.net/forums/images/icons/icon1.gif)
Originally Posted by dbae1978' post='1051221' date='Nov 9 2009, 07:46 PM
I'm not sure if it has been mentioned in previous posts, but to me it sounds like your high pressure fuel pump is on it's way out. There is a known defect with the n54 engine's HPFP. check engine lights, reduced power, rough idles and steering wheel shudders are all symptoms of a faulty HPFP. My 535i had the same problem and ended up qualifying for the lemon law. i would take it back to a different dealership and explain the symptoms. Have them check the high pressure fuel pump.
Good luck
Good luck
I doubt that my 535 is going to qualify for a lemon law; I have 57,000 miles on it.
#64
Contributors
Join Date: May 2004
Location: SoCal San Diego
Posts: 2,863
Likes: 0
Received 1 Like
on
1 Post
My Ride: 545i Sport
Model Year: 2004
Engine: N62
![Default](https://5series.net/forums/images/icons/icon1.gif)
Originally Posted by bigbadbull' post='1047911' date='Nov 5 2009, 07:29 AM
I know it's not the best of threads but here is what crap gas can do to a BMW engine... at least that is what is "Said " to have caused the damage....
http://www.e90post.com/forums/showthread.php?t=318889
Yeah it's a E71 but holy crap that's some bad cylinder scoring on a 2 year old motor.
http://www.e90post.com/forums/showthread.php?t=318889
Yeah it's a E71 but holy crap that's some bad cylinder scoring on a 2 year old motor.
![](http://sig.grumpybumpers.com/host/Hecticrulerz.gif)
This is all I can remember
![Roll Eyes (Sarcastic)](https://5series.net/forums/images/smilies/imported/rolleyes.gif)
But seriously, read post #9
![Thumbsup](https://5series.net/forums/images/smilies/imported/thumbsup.gif)
#65
![Default](https://5series.net/forums/images/icons/icon1.gif)
Originally Posted by oilers99s' post='1046600' date='Nov 3 2009, 08:24 PM
My car also have the rough idle during cold starts when I use Shell 91 (that's as high as I can get) . I tried 4 different Shell gas stations and the results were the same. As soon as I switched back to Esso 91 (which is the same as Exxon I think), the rough idle went away.
#66
Contributors
Join Date: Feb 2008
Location: Fullerton, CA
Posts: 4,074
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://5series.net/forums/images/icons/icon1.gif)
Originally Posted by juventus' post='1052765' date='Nov 11 2009, 06:32 PM
I doubt that my 535 is going to qualify for a lemon law; I have 57,000 miles on it.
As for qualifying for the lemon law, you need to speak to an attorney
#67
Members
Join Date: Nov 2009
Posts: 4
Likes: 0
Received 0 Likes
on
0 Posts
My Ride: '95 525iTA
'97 328iC
'07 525xi
![Default](https://5series.net/forums/images/icons/icon1.gif)
I used to use "whatever was cheapest" in my '95 525iT but I would get pinging with anything below 89 octane. I pulled off the head (broken head bolt) and since then it hasn't run well on anything but the "top tier" gasolines. I recently got a 2007 525xi and am using Shell premium almost exclusively without any problems. Here's a link to some info on "top tier" gas: http://autorepair.about.com/od/generalinfo/a/110305.htm . I used to drag race and I know that all gas is not created equal. Some engines (like the bimmers') seem to be a bit more sensitive to the additives they put in the gas.
#68
Members
Join Date: Aug 2009
Location: Eagan, MN, USA
Posts: 32
Likes: 0
Received 0 Likes
on
0 Posts
My Ride: 2006 550i w/sport package, comfort access, nav, cold weather package, rear heated seats, pdc
![Default](https://5series.net/forums/images/icons/icon1.gif)
Originally Posted by einstein57' post='1048655' date='Nov 6 2009, 12:38 AM
Shell and cold starts don't get along. My dads 3.0cs would never start in the morning if he used shell the day before. I'm a valero kinda guy myself. But last friday i put shell in my motorcycle and the next morning it would not start. That night it would not start. I was only using 89 so i ran the tank almost dry and filled her up with 91 at a different shell station. What happened the next morning you ask? Would not start again. So i drained the tank and filled it up with 91 valero and the next morning it fired right up and has every day since. I'm just glad my driveway is steep enough to gather up some speed to push start it. Maybe it only effects carburated and high compression motors.
![Smile](https://5series.net/forums/images/smilies/imported/smile.gif)
#69
![Default](https://5series.net/forums/images/icons/icon1.gif)
That's weird. The L/100 km meter beneath the tachometer has been acting strange in my car (06 525i). It would bounce around as the car is coming to a stop and I swear my gas mileage has gone down. Previously I'd be getting 600 km per fillup and now i'm getting 500 km. Anyways, I brought it to the dealer and they told me the mileage is prob due to the weather getting colder and the car needing more gas to run and couldn't find anything else wrong with it although they did acknowledge that the l/100km gauge was acting strange. Anyways, the master tech there asked me what gas I had been using and I told him the brand (it's premium but a no name brand) and he specifically told me to use Shell premium because their gas has no ethanol in it. So will try for a couple of tanks to see if the problem is still there and then may have to return for further checks. But strange he told me Shell and the original poster's dealer specifically told him not to go to Shell.
Thread
Thread Starter
Forum
Replies
Last Post
bestofthebest
Complete Car Sales
4
03-28-2016 02:47 PM
DetailersDomain
Detailing Forum
0
09-22-2015 03:59 PM