Low oil light on after oil change

**stevengrande** · 03-10-2014 09:24 AM

Just got my oil changed today (Mobil 1 5w/30) and this light came on. Brought it right back to the shop and had them check oil level, cap, filter, plug...all are good. What could it be?

-Steve G - 2005.5 A4 2.0T
***If you're reading this it was probably sent via TapTalk while driving my B7***

**//S POWER** · 03-10-2014 11:09 AM

Never had this problem. Faulty oil pressure sensor perhaps

Btw, Mobil1 yes but why 5W30? and did the shop fill the OFHAF with oil first before reinstall?

//S POWER

**Sanjman** · 03-10-2014 11:14 AM

why not audi approved oil? are they using mobil 1 filters as well?

**V2Rider** · 03-10-2014 11:23 AM

X2, 5w40. I have seen a few instances on 30 weight oil throwing the oil pressure light.

Tell them to do it right

**A-BlacK_MambA-4** · 03-10-2014 11:48 AM

Originally Posted by V2Rider

X2, 5w40. I have seen a few instances on 30 weight oil throwing the oil pressure light.

Tell them to do it right

Links?

I used Mobil 1 0w30 my last change and no such lights. Don't think it has to do with the oil. Sensor on the oil pan was unplugged and they didn't plug it back in maybe? (not sure why they would do that but a possibility) I'd check there. If it's plugged in unplug it and plug it back in and see if that fixes it.

**V2Rider** · 03-10-2014 11:53 AM

I only say this in regards to a BMW forum that was discussing the slight pressure difference between 30 and 40 weight oil, especially when the oil is hot.

I have no experience, as I have only run Amsoil 5w40

**stevengrande** · 03-10-2014 12:49 PM

I unplugged the oil pan sensor and plugged it back in...nada. I'm bringing it in to Audi tomorrow to look at it. It's running fine and no leaks on the cardboard I put under the car when I got home after. Hopefully it's just a sensor.

5w30 is what they have always used and I've never had an issue with almost 140k on her.

-Steve G - 2005.5 A4 2.0T

**Charles.waite** · 03-10-2014 01:12 PM

That is an oil level light not oil pressure guys, fyi. Did they forget to plug the sensor back in? or maybe damage the harness/connector? Seems like the most likely scenario...

**aluthman** · 03-10-2014 01:31 PM

Car's broken. I'll give you $100 for it sight unseen.

**stevengrande** · 03-10-2014 02:33 PM

Originally Posted by Charles.waite

That is an oil level light not oil pressure guys, fyi. Did they forget to plug the sensor back in? or maybe damage the harness/connector? Seems like the most likely scenario...

The sensor looked fine and I unplugged and plugged back in when I got her home, just to make sure. Hopefully, Audi can tell me what it is tomorrow.

Originally Posted by aluthman

Car's broken. I'll give you $100 for it sight unseen.

I have a guy from VWVortex offering $125. If he flakes, I'll call you on the 2nd Tuesday of next week to set up the logistics.

-Steve G - 2005.5 A4 2.0T
***If you're reading this it was probably sent via TapTalk while driving my B7***

**Dirtyylicous** · 03-10-2014 03:05 PM

Maybe unplug the battery and plug it back in? Sounds dumb but its worked for error lights in the past for me

**mec** · 03-10-2014 03:22 PM

Disconnect the flux and recapacitate the linear distributor, make sure to replace the transgasket differential and reseal the biaxle manifold otherwise you could run into serious problems down the road.

Also I would make sure that there is 5 qts in there, drain the oil, put it back in.

**stevengrande** · 03-10-2014 03:59 PM

Originally Posted by Dirtyylicous

Maybe unplug the battery and plug it back in? Sounds dumb but its worked for error lights in the past for me

Haha... I just came in from doing just that! No such luck. Aarrgghh....so aggravating.

Originally Posted by mec

Disconnect the flux and recapacitate the linear distributor, make sure to replace the transgasket differential and reseal the biaxle manifold otherwise you could run into serious problems down the road.

Also I would make sure that there is 5 qts in there, drain the oil, put it back in.

Is the biaxle manifold the one between the whosamajingy and the fukifiknow valve?

I checked the oil level multiple times...its reading full!

Sent from my Nexus 7

**Sanjman** · 03-10-2014 10:31 PM

Not trying to sound like a douche bag, but are you cleaning the dip stick, re-inserting and then pulling it out to read? Are you reading it after turning the car on and letting it idle then turning it off? The low oil light can be as simply as 1 qt less than it should be, but the dip stick level should make it obvious that it's low.

**stevengrande** · 03-11-2014 06:25 AM

Looks like there was some road grime in the sensor plug connector from all this lousy weather that was causing a bad connection. Audi cleaned it out, re-connected it and I had them wrap some blk weather proof tape around the connection to better seal it from the elements.

Charged me $50 but gave me a free oil change coupon to make up for the charge. Not too shabby...oh, and they have her a bath.

-Steve G - 2005.5 A4 2.0T
***If you're reading this it was probably sent via TapTalk while driving my B7***

**A-BlacK_MambA-4** · 03-11-2014 07:04 AM

Good deal. Glad it was something easy

**dalmation53** · 03-11-2014 08:29 AM

Originally Posted by A-BlacK_MambA-4

Good deal. Glad it was something easy

don't wanna have oil consumption ever again? use mobile 0w40 thank me later =]

**V2Rider** · 03-11-2014 08:44 AM

Originally Posted by dalmation53

don't wanna have oil consumption ever again? use mobile 0w40 thank me later =]

Amsoil here, 1/2 quart every 3500 miles on average

**B7Joe** · 03-11-2014 08:47 AM

Originally Posted by dalmation53

don't wanna have oil consumption ever again? use mobile 0w40 thank me later =]

That is the absolute worst of the bunch when it comes to oil consumption for me. The best have been LiquiMoli and Rotella T6 (which I am using now). Rotella is the best thus far.

**Charles.waite** · 03-11-2014 08:50 AM

Can we PLEASE PLEASE not start a thread discussion which oil is the "best" for oil consumption?

Posted from my iPhone. Any misspellings are Siri's fault.

**V2Rider** · 03-11-2014 08:56 AM

Originally Posted by Charles.waite

Can we PLEASE PLEASE not start a thread discussion which oil is the "best" for oil consumption?

Posted from my iPhone. Any misspellings are Siri's fault.

lol

**V2Rider** · 03-11-2014 08:57 AM

Originally Posted by B7Joe

That is the absolute worst of the bunch when it comes to oil consumption for me. The best have been LiquiMoli and Rotella T6 (which I am using now). Rotella is the best thus far.

X2, I hear good stuff about Mobile, but have been with Amsoil in all vehicles for years with no ill effects.

**A-BlacK_MambA-4** · 03-11-2014 09:11 AM

Originally Posted by dalmation53

don't wanna have oil consumption ever again? use mobile 0w40 thank me later =]

I've never had an oil consumption problem....................

**Charles.waite** · 03-11-2014 09:20 AM

Originally Posted by A-BlacK_MambA-4

I've never had an oil consumption problem....................

You must use Mobil 1!

/s

Posted from my iPhone. Any misspellings are Siri's fault.

**A-BlacK_MambA-4** · 03-11-2014 09:27 AM

Originally Posted by Charles.waite

You must use Mobil 1!

/s

Posted from my iPhone. Any misspellings are Siri's fault.

Hahahahaha once. Motul 8100 X-cess FTW.

**dalmation53** · 03-11-2014 09:45 AM

I used 5w40 and was probably consuming 1 quart every 700 miles or so I was getting tired of that an was going to let the B7 GO. Then used 0w40 and since 5 months ago have not have any warning go on an for some reason it performes better in terms of acceleration..

**V2Rider** · 03-11-2014 09:47 AM

You went from the reccomended weight burning 1 qt every 700 miles, to a NON reccommended burning nothing AND improving performance?

GTFO

;)

**dalmation53** · 03-11-2014 09:55 AM

Originally Posted by V2Rider

You went from the reccomended weight burning 1 qt every 700 miles, to a NON reccommended burning nothing AND improving performance?

GTFO

;)

Well that's how my car feels atleast is working I guess, it's been 5 months of joy

**Charles.waite** · 03-11-2014 09:58 AM

Confirmation bias is a terrible thing.

Posted from my iPhone. Any misspellings are Siri's fault.

**stevengrande** · 03-11-2014 10:17 AM

The shop I've been going too uses Mobil 1 exclusively as their synthetic brand. They charge me $60 for an oil change. I really can't complain as I've never had a consumption issue with it.

-Steve G - 2005.5 A4 2.0T
***If you're reading this it was probably sent via TapTalk while driving my B7***

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