Regular 87 Unleaded on 2000 up STS?

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Sep 25, 2008 | 12:10 AM

SPreston2001

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Joined: Sep 2008

Posts: 18

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Regular 87 Unleaded on 2000 up STS?

Hi guys I just read somewhere that in 2000 Cadillac changed the N* to accept regular 87 octane gas. Is this true? Should I stick with premium fuel? Dont wanna hurt my baby lol!

Sep 25, 2008 | 01:38 AM

stomper

Tech Certified Members

Joined: Jun 2007

Posts: 2,701

RE: Regular 87 Unleaded on 2000 up STS?

Quote:

ORIGINAL: SPreston2001

Hi guys I just read somewhere that in 2000 Cadillac changed the N* to accept regular 87 octane gas. Is this true? Should I stick with premium fuel? Dont wanna hurt my baby lol!

rule of thumb: use the lowest octane that the car can run on w/o pinging.

Sep 25, 2008 | 02:20 PM

jono6406

Senior Member

Joined: Oct 2007

Posts: 230

From: Tampa, Florida

RE: Regular 87 Unleaded on 2000 up STS?

Het Stomper, is that why your Allante ran like a tin lizzy.(LOL)

Jono

Sep 26, 2008 | 01:11 PM

Katzmans Caddy

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Joined: Dec 2006

Posts: 1,461

From: Toronto, CANADA

RE: Regular 87 Unleaded on 2000 up STS?

Quote:

This is true.

Compression ratio dropped to 10:1 combined with fast burn technology. Go crazy saving money on fuel.

Sep 26, 2008 | 10:59 PM

SPreston2001

Thread Starter

Joined: Sep 2008

Posts: 18

From:

RE: Regular 87 Unleaded on 2000 up STS?

Thanks for the info guys! I now know its safe to use reg at the pump!! Did the production of these N* motors come in all 00 and up STS including 2000 models released in 1999? Is there any way I can check my STS to make sure?