What oil to run?

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Nov 21, 2005 | 12:59 AM

SIC LSX

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From: Bossier city,LA barksdale AFB

What oil to run?

i just got a 99 z28 with 80,000+ miles on it and info will help. the lowest ive see the pressure is 40lbs

Nov 21, 2005 | 01:54 AM

gnbooster87

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From: Lynwood

mobil 1 synthetic 5w30 all the way

Nov 21, 2005 | 03:27 AM

MdFormula350

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From: Maryland; USA

same here

Nov 21, 2005 | 07:54 AM

RDISADEIFAN

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From: new hampshire

German Castrol 0w30

Nov 21, 2005 | 09:14 AM

HandsomeBWouderful

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From: SA Texas

I would say stick with a good conventional oil unless you are going for a longer oil change interval. I like Castrol GTX 10w-30 or Havoline 10w-30. The Mobil 1 tends to sheer back to a thinner grade with use.

Nov 21, 2005 | 10:25 AM

Zymosis

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From: World

German Castrol 0w30 (Green stuff)

Nov 21, 2005 | 10:47 AM

GreekGator

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From: Jupiter/Gainesville, Fl. The other "U"

From the oil I HAVE USED SO FAR, i would run Mobil 1 5W40. Now, most are going to say German Castrol 0W30. I just bought a lot of this and am going to try it out my next oil change. But, as far as now, id run M1 5W40.

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Nov 21, 2005 | 11:01 AM

Red91vette

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From: Delaware

What would you guys put in if you didn't know it's history before the 80k miles? My old fbody I put int 5w30 mobil 1 synthetic, but I just got a WS6 with 77k miles and changed it with 10w30 castrol (what I used in my old vette) I didn't think putting synthetic in would be a good idea on a high mileage car. Since changing oil tho, the car seemed to tick a little louder.

Yeah, this topic should deffinitely be made a sticky.

Nov 21, 2005 | 11:02 AM

#10

brightgreenZ

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AMSOIL 0-30W. The best in the biz!!!

Nov 21, 2005 | 02:54 PM

#11

Mr Incredible

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From: Just This Side of Damnation

I'm at 77,7xx miles, purchased at 72,5xx. I use Mobil 1 5w-40. Though for now, over the winter (and to use it up) I have 10w-30 in.

Nov 21, 2005 | 04:18 PM

#12

Z28MrJ

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From: NEW JERSEY

I Use ROYAL PURPLE 10-W30 on all 3 of the camaros i have Owned.. & still running strong

Nov 21, 2005 | 04:20 PM

#13

DrEvyl

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From: Seattle, WA

I run Mobil 1 5w30 in all three of my vehicles.

Nov 23, 2005 | 08:14 PM

#14

tirefryer

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From: New Jersey

Amsoil 5W40, it quieted the piston slap vs. the GC 0W30 I tried.

Nov 24, 2005 | 01:34 AM

#15

SS DNA

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From: NorcaL

I just got some Royal Purple 5w30, I want to see if I notice a difference in the sound of the engine like the Amsoil for example, Seems to get them quieter.

Nov 24, 2005 | 02:34 AM

#16

blue01ta

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From: PA

I run Mobil 1

Nov 24, 2005 | 02:35 AM

#17

rockaholic5001

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I ran Mobile 1 in my 99 WS6 for a while, and I converted over to royal purple. I am also thinking about changing my tranny and gear oil over to the purple because you gain a little more foot pounds of torque. I saw it on Horespower TV. They changed all the oils to royal purple and they gained about 10 foot pounds at the wheels.