2007 Shelby GT - 4.6 normal - The car has only 12k on it. I only put maybe 1K on it a year and it's stored in Florida. I use Mobile 1 synthetic - how often do i have to change the oil. Seems like a waste to change it every 2 years?? Oil looks clean. Further i hear that the spark plugs can come loose on these motor???? How do you know?? It is a lot of work to check them as the motor has those plastic covers over the top and valve covers for looks. Is this really an issue???
Oil, no answer. Sparkplugs, it's not that they come loose, it's that they fall apart when replacing them. Google it, it's ugly. They are a three piece plug. I'd pull them if it was my car and replace with a one piece design.
