What is the preffered oil for us Z owners ?, what are you guys using?, looking to an oil change every 3K miles, so going to stock up on some oil , last oil change was done at nissan.
I have narrowed it down the the chosen four below, wanting to know what you guy's are using, and what ones best if there are any huge difference between them ?
Cheers,
Gulf Competition 5w-40 5L
Silkolene Pro S 5w-40 5L
Royal purple 5w30
Millers CFS 10w40
???