i dont find this answer to be clear enough. ive SEARCHED and they all just turn into oponionated arguements about wich is better blah blah. so what actually is the best.
1.sparkplugs
2.gearoil
3.diff fluid for our cars.

 

Not certain how you determine "best." Today's opinions will resemble last years opinions which are similar to opinions offered 7 years ago.

 

There is no best especially if it's a stock car or near stock. Just follow the owners manual and you can't go wrong

 

Get NGK plugs like the car came with. Get a synthetic gear lube like Royal Purple, Redline, etc. for trans and diff. Simple as that.

Check the links in this thread... https://my350z.com/forum/maintenance...intenance.html ... to the trans and diff change DIYs. Lots of suggestions on fluids, mixs, etc.

 

davidv- well i figured id ask just because theres probally better products offered now than 6-7 years ago.

andthank you for such a dirrect answer!!! v

 

Please tell me who the best President was once we hammer out this Best Oil thing. And the world's tallest midget.

 

OP, you should also read this thread before creating any additional threads:

https://my350z.com/forum/2003-2009-n...questions.html

This post gives you exactly what fluids are recommended from Nissan..

https://my350z.com/forum/2577195-post16.html