Thanks to all for your replies, I can assure all I'm taking notes and learning at the time, you all been great

Regarding the smell, I have noticed that the smell is stronger when windows are closed, or when I turn on the A/C with vents closed, and or window defrost.

Yvn67

 

Ok then definitely check under the rear cargo floor at the top of the tank...
Thats not my most scientific test but it works