Hi this is my first post, I recently got a Saab 95 vector 2l diesel.
After purchase I brought it to a mechanic for a service and a break change (the car has been sitting before I bought it and the calipers seized :/ ) they did an oil change on the car and said everything is fine no leaks no nothing but when I go to start the car in the morning in colder weather (like below 10 deg C) I get an 'Oil pressure low turn off engine' immediately, no lamp on dash lights up I just get the warning it goes away almost immediately, I let the car sit while running for a few mins and I don't get that warning throughout the drive again.

Sidenote: The car has been jumped so it doesn't display the mileage if anyone has a quick fix for that it would be greatly appreciated :)