premium vs regular lol

[JC1994]

all we have for premium here is 91. my car runs best on 93 octane.

 

[2002WRXSTi]

If a car is not tuned right, premium can make up for it. But if a car is in good condition, its impossible to get better economy out of higher octane fuel.

Timing was right, had new plugs n wires and 135k on the truck. So nothing could be found wrong with it.

 

[unity]

Timing was right, had new plugs n wires and 135k on the truck. So nothing could be found wrong with it.

Well something was not right unless the car had the ability to defy the laws of physics!

 

[2002WRXSTi]

Would have liked to find out why it did what it did but I wound up trading it for a 86' GN so I was quite happy to let it go

 

[LowLincoln]

you probably had an overly sensitive knock sensor in that car and kept pulling timing with regular gas.

 

[2002WRXSTi]

you probably had an overly sensitive knock sensor in that car and kept pulling timing with regular gas.

Carburetor and distributor so knock sensor did not exist at that point in time.

 

[LowLincoln]

hmm.. maybe it ran hot or was too lean (I know you were saying that it was tuned right but the distributor could have been a gear off internally)

I really can't think of anything else!

 

[dnehthend]

mark viii gets premium, fleetwood gets regular

mark viii sees 6500 rpm, fleetwood is lucky to see 2400-3000

slow and steady with the fleetwood

I just stick with what the manual says

 

[johnnyjaws]

If im takeing it easy or on the freeway ill put reg in it

 

[mikemark8]

Not a DD, and I always put in 93 during hotter months, but in colder months (like now) I will occasionally top off with 87-I rarely beat on it, and since the temp on the ultra gauge is rarely over 180 in the late Fall/Winter/early Spring, it makes no difference in performance or gas mileage.

I feel better when I put in 93, then I remember that I saved a few bucks in cooler weather and it did not have any effect on how it runs, so it's all good.