red oil lamp flashing and buzzer 1.8t AGU

[1.8t.jim]

recently serviced my car and put in 5w 40 fully synthetic oil and a new K&N oil filter, and earlier i had a red oil lamp flashing saying low oil, i checked oil after 15 mins cool down and it was half way on dipstick ?? so topped it up a littlle bit to full, i rang a friend who is a vw mechanic, and he told me i shouldnt use 5w 40 fully synthetic oil as it gets to thin once warm and sets off the sensor ? but ive topped up now and took it on a test drive and it seems ok ?  the fans arnt running to say the engine is overheating or anything ? got a little bit of power loss when oil light came on i dont no if this means the engine went into safe mode ? can anybody help me please

[Wazzzer]

you don't have a low oil level warning, you have a low pressure warning

[1.8t.jim]

so what does that mean ?? help lol

[itavaltalainen]

As Wazzzer said it's an oil PRESSURE warning light, which means either the switch has failed or your oil pump.

Your mechanic saying don't use 5w40 - stay clear of him when it comes to oil, he has clearly no idea....

[JimBR]

Low oil pressure seems to be caused by a blocked pick up pipe (generally anyway).

[1.8t.jim]

thanks every1 for your help, ive got my car in drive now ready for some work to be done to the oil pipes, back in my seat ibiza untill its on road again lol

[Wazzzer]

yep pick up pipe is worth replacing, doesn't cost much in comparison to a new engine. Might be worth replacing the switch too

[simon_709]

When this happened to me it was the pick up pipe! Def worth changing, I had to get another engine because I didn't realise what it was

[1.8t.jim]

its a good job ive put my car off road for the time being then, ive ordered a new oil pump anbd pick up pipe, just got to work out how fit them both  thanks for everybodys help !

[dan2252]

Why change oil pump? It's gonna be pick up pipe and 540 is fine iWork for vw and it's what most cars get