I am not sure what type of coolant I have in my car but is it okay to mix coolants or should I just flush the coolant?

Also, what brand do you guys recommend? Right now I have Prestone and Racepro coolant!

 

If you're under warranty, follow the manaul instructions carefully, down to the coolant type. Nissan makes it's own coolant. Even after your warranty is up, I would suggest the Nissan coolant.

Flush, flush and flush it with distilled or demineralized water 2-3 times, then mix the Nissan coolant with distilled water 50/50. Nissan, I think, now has a blue coolant that's supposed to be fairly superior to the older one, and Zerex also carries an "Asian vehicle formula" that comes pre-mixed and is designed for our cars. But. I'm no expert, maybe someone else can add or correct this entry.

The 05 manual reads:
Finally, do a quick search and you'll see that this has been covered extensively on the forum.

Good luck and I hope this helps.

 

If you have money to burn and feel the need to be the best.. buy the most expensive optionyou find flush your system and enjoy that you spent alot for no reason. If you aren't the type that thinks its ok to spend $7 per gallon of gas, spends thousands on ridiculous mods and essentially put all of their money into their car because they still live with mom and dad like so many of this forums users... then don't worry.. buying regular mans coolant and mixing it won't hurt your G.