To start this off I drive a 2011 A3 2.0 Quattro. Lately the engine oil pressure warning has been coming on intermittently. Only conditions I have noticed is warmer days, driving for 1+ hours, at 1500 RPM or less and oil temp 100-108 C. But here's the weird thing. It only comes on for 5 sec and then goes off. If you shut the car off and restart it it'll stay off. The engine isn't making any noises (no lifter tapping or bottom end knock.) And it doesn't happen everyday. Yesterday it was 93 out and it didn't have an issue.
Thinking that it was time for an oil change anyway and that the viscosity my have broken down I did an oil change with a new Mann filter and mobile 1 0w40 oil, then thinking that it maybe a bad sensor I changed that but the light came back on today.
So here are my questions. Are there any common failures on the TSI motors that can cause an intermittent loss of pressure? How do I test the pressure and where can I get said tester? Can anyone think of any other things that may be a "simple" fix issue that I may be missing?