I like things cool. so I was wondering if I sould repace my radiator coolant with royal purple coolant or other brand? is it necessary? or should i go the way of an after market radiator.

down the road Im probably getting a turbo. so i dont think getting an aftermarket radiator will be worth it

04 coupe 5AT

 

It's good to change out the coolant per the service schedule, but other than that, it's not going to make too much difference.

As you're going turbo (like everyone else) then wait to change things out until then.

 

Don't think it will matter what brand fluid you use. Get a Lisle funnel and follow video guide on infinitihelp.com.

 

ok cool thank guys

 

Biggest help to cooling would be to put in a bigger radiator...larger capacity will help keep it all cooler.

You could also do the pathfinder cooling mod which has been claimed to lower temps by close to 10*


None if these are really necessary but if you go turbo I would do radiator and consider the pathfinder mod together. If you build the block I would forgo the pathfinder mod for the HR head gasket and machine the block areas to accommodate it. It has much more even cooling and better all around over the stock head gasket.