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The best and only gas to use to keep your caddy emmission clean is 93' octane. preferably from a Shell's gas station.

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16y ago

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What is the best gas to put in a Cadillac STS 1999?

The best gas for a 1999 Cadillac STS is premium unleaded fuel with an octane rating of 91 or higher. Using higher octane fuel helps optimize engine performance and efficiency, as the STS is designed to run on premium gas. While regular unleaded may be used in a pinch, it is not recommended for long-term use due to potential knocking and reduced performance. Always consult the owner's manual for specific fuel recommendations.


What used Cadillac model would offer the most gas economy?

The Cadillac STS is currently rated with the best gas mileage. The new Cadillac Escalade Hybrid is also top on the list for good gas mileage.


How much gas does a 1994 Cadillac sts hold?

The 1994 Cadillac STS fuel tank is a 20 gallon fuel tank.


How big is the gas tank on a Cadillac STS?

Approximately 17 gals


Does the Cadillac STS get good gas mileage?

Yes, the Cadillac STS will get good gas mileage on the highway. It does however have a reputation for unreliability so another more reliable car would be a better choice.


How many gallons of gas does it take to fill up a cadillac sts?

20


Why is 1999 Cadillac STS keep stalling?

out of gas?????????? their could be several reasons from a bad sensor to a bad fuel filter take it to your mechanic he sould be able to help you


Why your gas hand dont work on your 1999 Cadillac Escalade?

my gas hand is not working in my 1999 cadillac escalade


What Cadillac models offer the best gas mileage?

The Cadillac STS, CTS Sports Wagon, and CTS Sedan offer the best gas milage. They all have 18mpg city and 27mpg highway. Cadillac DTS 8 cyl, 4.6 L, Automatic 4-spd, Regular offers the best gas mileage. It has 15 MPG in the city and 22 MPG in the highway.


How do you change fule pump 93 Cadillac STS?

you have to drop the gas tank and remove the lock ring and inside the gas tank is the fuel pump.


Where is gas open button for 2008 Cadillac sts?

In the 2008 Cadillac STS, the gas tank release button is located on the driver's side, near the floor, just to the left of the seat. It is typically a small lever that you pull up to open the fuel door. If you are having trouble finding it, check around the area near the driver's side door.


Where is the fuel pump located on 1999 cadillac deville?

in the gas tank

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