Well i dropped the car off thursday night and nissan had a courtesy car ready for me, i explained to them i knew the car was fine up till the service, i said the only things that have changed is the oil and oil filter.
They assured me they hadn't used the incorrect oil.
So i get a phone call the next morning at 9, they said the technician had started up and there was no noise what so ever, i told them it could be due to the milder temperature we were having. I said i don't wanna be boy calling wolf and 2 weeks down the line when its colder and bringing it back.
He then said that he would ask the technician to take it for a drive getting it up to temp and see if he could see anything and he would give me a call back.
I expected them to call back an hour later, expecting they would have found nothing.
Instead i get a phone call at 3.15 in the afternoon, basically saying all the technician could find was noisy injectors on start up and it was in the characteristics on the engine in colder temperatures.
To cut a long story short i collected the car drove home and guess what, spanking fresh new oil haha (obviously they weren't going to admit it)
We had a cold night here last night got down to 3 degrees, started it up not a ticking noise at all to be found.
So i am on the hunt for a different garage to use in the future