which synthetic oil do you prefer??

Trips

Congrats and Welcome!

I see we're practically neighbors. lol

And like it has been suggested, edit your intro post to only introduce yourself, and ask the oil question on the engine section.

__________________

AK370Z

K&N is fine. I currently have pure1 on my Z but I have two K&N sitting at my desk. So I'll use those K&N for next two changes and switch to Purolator Pure1 for all future changes

As for oil, any API certified 5W30 will work. Though, it's suggested that you wait a little (3000-5000 miles) before switching to synthetic THOUGH there are members here that switched at as early as thousand miles and no issues till date.

Welcome

__________________
The370Z Signature Pictures ll Want to rock our forum decals on your car? Then click here! ll How to Embed YouTube Videos In a Post
STOP! (Hammertime) ll Become a Premium Member Click HERE ll F.A.Q.
Are You a Nissan Dealer? Click Here to Become A "Supporting Dealer" and Start Listing Your 370Zs In Our Inventory Section
My Monterey Blue Z ll My Exhaust --> My Intake --> G3
Nissan's Official Response Regarding Oil Temp Issue: CLICK HERE
Need a Set of Cheap Winter wheels /Tires? Then Visit The Banner Link Below and Place Your Order. You'll Help Keep The370Z Alive.

Xan

Why are you changing?

__________________

AK370Z

UPS screwed up my oil filter order which I placed two months ago. Then, K&N sent me two filters. I plan on using them and then switch to purolator puro1 for future. I like the pure1 because it's slightly larger as cliff aka "dad" pointed out.

__________________
The370Z Signature Pictures ll Want to rock our forum decals on your car? Then click here! ll How to Embed YouTube Videos In a Post
STOP! (Hammertime) ll Become a Premium Member Click HERE ll F.A.Q.
Are You a Nissan Dealer? Click Here to Become A "Supporting Dealer" and Start Listing Your 370Zs In Our Inventory Section
My Monterey Blue Z ll My Exhaust --> My Intake --> G3
Nissan's Official Response Regarding Oil Temp Issue: CLICK HERE
Need a Set of Cheap Winter wheels /Tires? Then Visit The Banner Link Below and Place Your Order. You'll Help Keep The370Z Alive.

Xan

Ah ok, the reason I asked because I thought you might have had some insight to which one is better.

From what I understand the Puro has a finer filter but this comes at the expense of flow rate (though still within SEA standards). Now the bypass pressure on the Puro is also somewhat higher then the K&N.
So allthough it filters better just from a filter performance point of view and therefore does good in tests, I'm wondering how good it is for our engines, especially when you drive them under high load for a longer time.

I wasn't able to find the exact specs for the two different filters and I don't know if this is correct, but this is what I found for similar filters:

Purolator PureOne PL34631
* Average largest pore size: 42 µm
* Smallest pore size: 10 µm
* 30W 70F Oil flow @ 10psi: 5.3 oz per minute

K&N 3002
* Average largest pore size: 63 µm
* Smallest pore size: 27 µm
* 30W 70F Oil flow @ 10psi: 14.7 oz per minute

__________________