91 octane

[manifestgolf2.0]

most gas stations only have 87, 89, 93, octane. now i dont know if this is true but to actually get the car with 91 octane people from other forums say to mix 1/2 93 and 1/2 89 to get 91, does anyone know if this is true or not?

[golfzex]

Originally Posted by manifestgolf2.0

most gas stations only have 87, 89, 93, octane. now i dont know if this is true but to actually get the car with 91 octane people from other forums say to mix 1/2 93 and 1/2 89 to get 91, does anyone know if this is true or not?

why would you want to do that?

[manifestgolf2.0]

what i guess i really want to know if there is a difference between 87 and 91 and if it actually makes a difference in the performance in the car.

[golfzex]

Originally Posted by manifestgolf2.0

what i guess i really want to know if there is a difference between 87 and 91 and if it actually makes a difference in the performance in the car.

yes and yes.

[manifestgolf2.0]

cool thanks bruce

[MarkTres]

we dont have 93 octane in san diego, but we have 91....why?

[VwwowGuy]

you should run 93

[sdhelzer]

If your owner's manual specifies that you should run 91 Octane then you should run 91 or HIGHER octane. In today's computer controlled iginition / combustion systems there is really nothing to be gained by running higher octane than required unless you have modified your vehicle's engine and / or computer. If you continously run a lower grade of octane than required for you vehicle then you run the risk of poor perforance and premature decay / damage of your engine.

In my opinion you can occassionaly run mid-grade 89 octane as long as you follow up with 91/93 octane; but why??? The price incremental between grades 89 to 91 to 93 octane (at least in New Jersey) is prox $.10 per grade.

In summary... give your VW want it wants and it will treat you well for a long time.

[MarkTres]

well very few cars require 91 and up, stock.