hey everyone

For the past few days while driving at higher speeds and while turning left (and it appears to be while turning left only) my low oil pressure light comes on. As soon as I straighten out and drive for another minute or so, the light turns back off.

Any idea what could be causing this? Or what I should look for or check?

Thanks for the help!

 

The oil light coming on can be a sign of sludge buildup in the motor. The 1.8Ts (I'm assuming you have a 1.8T) are notorious for having a problem with sludge. What happens is the sludge can accumulate in the oil pickup causing low pressure. That sludge can also clog the turbo oil feed line, not a good thing.

When I bought my A4 the oil light would come on occasionally. I can't remember the name of the sludge treatment that I used, but I also had the turbo oil feed line replaced preventatively and run fully synthetic oil now. The light hasn't come on since.

 

1. Check oil level!
2. Check oil cap for signs of sludge.
3. Perform an oil change. Use 0W-40, the lage capacity Audi or Mann filter, and a half a can of Seafoam in the crankcase. Drive for approximately 500 miles and perform another regular oil change with 0W-40, the large filter, sans Seafoam. If the light stays off, change the oil as frequently as your wallet will allow for the next several thousand miles.
4. If the light continues to come on, check or replace the oil pressure sender and wires to the instrument cluster.
5. If the sender is OK, and all else has failed, you'll need a sludge kit.

 

Its actually a 2.8L, but I assume the issue would probably be the same.

Didnt see any sludge on oil cap. When I checked the oil it didnt seem low or anything, so I am currently in the process of doing an oil change to see if that will fix the issue. The only thing I notice that seemed out of the ordinary was some oil leakage/buildup on the outside of the oil filter...possible pressure leak/loss from oil filter? I'm not sure...will find out once I have that swapped.

 

my 12v used to do that just before the oil change interval, about 2500 miles. thats how i knew when it was time to change the oil lol

 

So it's a 2.8...

Try the same procedure anyway. 1.8T's are prone to sludge due to lack of oil changes. In a turbo car, oil change diligence is a must. The 2.8s are not nearly as susceptible,
but it's not unheard of.

More likely for your V6, you might be looking at more likely a worn oil pump, worn rod bearings, or even just a clogged screen.