How do I secure the motor cover trim? on 2002 Saab 9-5

The cover over the motor is not secured with anything and it rattles when driving the car. I stopped at two independent auto part stores and neither one of them knew what to use to fasten it down. There appear to be 6 holes in the plastic cover trim but I don't know if there is a specific type or size of bolt or screw that I need to buy. Any advice or recommendations would be greatly appreciated.

Asked by for the 2002 Saab 9-5
1 answer
there should be five screws to hold it down and to remove it you must take oil cap off they are srew heads that are torx styled