its best to run what your manual recommends.. a d16z6 would be mid-grade

 

Actually, premium has more resistance (or less tendency) to premature combustion (which I am pretty sure is what you meant).

 

It's actually 11.9, but it sure as hell doesn't hold that much h:. I run midgrade, like 87-89. I need better mileage .

 

i would tend to agree. premium is more geared for older cars, and has been known to melt aluminum heads in some newer cars.

 

I'm actually pretty surprised myself. Only things I did when I bought the car were changing the spark plugs, changing the oil, and dropping in a K&N. The parts they replaced were filthy and the car seems like it was totally uncared for by the previous owner.

Hmm... Maybe it's because my car has ABS with rear disc. J/K!

 

i am really surprised to see mileage below 26 mpg on a honda forum. thats appaling! anyways i drive a GSR and get between 28 and 31, freeway or not. but i run premium (required minimum is 91 octane for my car), and so its more expensive for me to fill up my tank than you guys my mum keeps track of her mileage in her diesel jetta and averages about 47 city and about 52 freeway. and my winter car, a 1985 diesel golf, runs about 45 mpg.

edit: dont know if you guys care, but FYI my dad and i drove from SF to cleveland in the jetta with the golf in tow (all four wheels on the ground) and got 36 mpg cruising at 70 mph the whole way. it performed surprisingly well climbing sierra nevadas, pulling nicely even up the steepest grades without any complaints.

 

first of all im not stupid, and tell me y i shouldnt run premium with my b16?

 

no its 11.

 

98 EX w/ 116,000 miles.

Best MPG I have gotten was 38.6. The majority was freeway.

 

First off, B16, or D16?

I was under the assumtion that you run a D16, since you never ever once mentioned a B16 in this thread or your signature.

if D16 then:


I just did...

Your fuel economy goes to hell, you don't burn all the fuel, you get excess carbon deposites both in your engine and in your cat, exaust etc.

its like drinkin coke instead of gatorade when running a marathon.

Coke may taste better, but your body doesn't use it as well as the gatorade.

thanks, yea that is what i meant, typing faster than thinking wned: me