What oil to use, and what viscosity?

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Mar 2, 2012 | 09:07 PM

#51

Boofster

Joined: May 2005

Posts: 7,726

Likes: 1

From: 茨城県

Take a quick read of this:
http://store.forcedperformance.net/m...otor%20Oil.pdf

Amsoil AMO 10w40 has

TBN: 12.1
Zinc: 1378
Phosphorus: 1255

Just make sure you're running it with no cat.

Mar 3, 2012 | 07:32 AM

#52

gsx2004

Joined: Dec 2007

Posts: 241

Likes: 0

From: Weston, FL

Amsoil 10-40 in a built engine, oil analysis have been very consistent and clean

Apr 24, 2013 | 05:42 PM

#53

jordannn93

Joined: Apr 2011

Posts: 1,419

Likes: 0

From: Olyphant, Pa

Anyone use delvac 15w40?

Apr 24, 2013 | 06:00 PM

#54

redboost10

Registered User

Joined: Mar 2011

Posts: 1,415

Likes: 2

From: Woodburn, OR

Quote:

Originally Posted by jordannn93

Anyone use delvac 15w40?

Yes. In my daily driver 86 crx si w/ 340k miles, my f350 powerstroke with 220k miles. But not in the race car.

Apr 24, 2013 | 06:30 PM

#55

s2000Junky

Community Organizer

Joined: Jun 2007

Posts: 31,070

Likes: 566

Quote:

Originally Posted by cmn

I'm now going turbo with my S. What oil and viscosity should I use? I have been using Castrol Magnatec 5w-40 until now, and like it. Would it be ok to continue to use the same oil now that I'm going turbo? Or should I use another brand or another viscosity?
Keep in mind that I live in Norway, and we don't have Royal Purple etc here. Some well known brands that are quite easy to get here would be f.ex Castrol, Agip, Mobil 1 to mention some. My experience with these so far is that the S uses noticeable amount of oil with Mobil 1, and uses no(!) oil with the Castrol..
Greatful for any help!

5/40 is a good weight NA or FI. I use it most often. Currently Shell Rotella. If you find your current 5/40 oil is working good for you now, I'd stick with it.

Apr 24, 2013 | 07:20 PM

#56

helloimsteve

Joined: Oct 2010

Posts: 850

Likes: 1

From: Sacramento

Quote:

Originally Posted by Deception

shell rotella T6 5w40.. nearly as good as the premium oils but much cheaper

Best oil I've ever used so far. I burn less using Rotella compared to other store brands. Amsoil is great also, I ran 0w30 when I was NA and even that was awesome too.