The owner's manual suggests a rating of 91 octane and further comments that 87 can be used but could cause knocking in the engine.
Cadillac recommends you use Premium fuel of 91 octane.
This car is recommended for 91 octane
use's regular 87 octane which can be bought at any gas station and you can use 93 octane also.
The best and only gas to use to keep your caddy emmission clean is 93' octane. preferably from a Shell's gas station.
On a 2008 finely engineered car like Mercedes, I would use the high or middle octane- not the lowest. Don't use the lower octane if you hear it knocking under acceleration; however I think the engines are electronically regulated not to knock.
No less than 87 octane.
Regular 87 octane unleaded.
Highest or middle octane. I wouldn't use the lowest.
Yes. It is generally a myth that midgrade or premium fuels improve engine performance. It is true that certain high performance engines require a higher octane fuel. this, however, is typically in the realm of racing engines that use 104 octane or better. Higher octane fuels generally just produce more pollutants, and cost more. the higher octane actually burns hotter, and therefore can cause greater wear on the engine. Most cars do just fine on 87 - 90 octane fuels (the octane range for regular unleaded fuels).
The 2008 Accord V6 is designed to run on Regular 87 octane fuel. Using a higher octane fuel is a total waste of money. You will get no better mileage, no more power, and in fact it may cause hard starting if you use a higher octane fuel. It is a myth that a higher octane fuel is better. Use 87 Octane any major brand and nothing else. As to brands, they are all good. I personally use Shell in my 2004 Accord V6.
Octane has not special application excepting the so-called octane number.
i would use some royal purple or mobile 1 10-30 to 20-50 depending