gasoline brands
Safety Car
Joined: Apr 2007
Posts: 3,640
Likes: 83
From: . New York
We go over this a lot here 
Do a search, you will find many, many multipage threads on the subject.
A couple of recurring themes that come up:
All gas is the same, all the additive packages that companies put in their branded gas is all snake oil (doesnt matter). Just an opinion, but from what Ive read.....thats not true. The jury is still out, but there are some factual studies that show a perceptable advantage if certain branded detergent mixes are used. In the C5 particularly, if you stick with noname gas you can anticipate fuel guage problems down the road.
You cant run a C5 on regular 87 unleaded, (again....these will be opinions on previous threads)....well actually you can. The lower octane gas is not going to hurt anything, the antiknock stuff will prevent...well....knock but you wont get the performance out of the car that someone who uses 93 octane gas. Related is
Well if 93 is recommended.....100 should be better, nope. Your tuned for 93, anything above that and you re getting exactly zero benefit. Will perform the same or slightly less so.
BTW, the ethanol isnt hurting the metal components, its the plastic/rubber ones that suffer (its a drying agent). Dont knnow the year, but after a certain year most fuel systems were built to accomodate the ethanol without component degredation, I think our cars (97 to 04) just missed that mark, so technicaly we have components that may suffer.
two cents deposited.
Do a search, you will find many, many multipage threads on the subject.A couple of recurring themes that come up:
All gas is the same, all the additive packages that companies put in their branded gas is all snake oil (doesnt matter). Just an opinion, but from what Ive read.....thats not true. The jury is still out, but there are some factual studies that show a perceptable advantage if certain branded detergent mixes are used. In the C5 particularly, if you stick with noname gas you can anticipate fuel guage problems down the road.
You cant run a C5 on regular 87 unleaded, (again....these will be opinions on previous threads)....well actually you can. The lower octane gas is not going to hurt anything, the antiknock stuff will prevent...well....knock
but you wont get the performance out of the car that someone who uses 93 octane gas. Related isWell if 93 is recommended.....100 should be better, nope. Your tuned for 93, anything above that and you re getting exactly zero benefit. Will perform the same or slightly less so.
BTW, the ethanol isnt hurting the metal components, its the plastic/rubber ones that suffer (its a drying agent). Dont knnow the year, but after a certain year most fuel systems were built to accomodate the ethanol without component degredation, I think our cars (97 to 04) just missed that mark, so technicaly we have components that may suffer.
two cents deposited.
