i can’t be the only one who runs regular in a GT right?

[WildHorse]

What does that have to do with 99 % of the driving most people do, whether they own an M5 or a CR-V?

Then go pass a car @ 60 km/h in 4th like 99% of the peeps do and check your logs. Timing is only reduced AFTER knock is detected. Any amount of knock causes internal damage. That's not something I'm willing to trade off running lower octane fuels.

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[sk47]

Hello; As an aside, I drove to Big Stone Gap VA. today to look at a 1998 Mustang Cobra. Turned out to not be a good car for me. The cats were gone and it was rough. Also is a convertible which I do not want ( the photo in the ad was a stock photo of a coupe.)
While I was there, I got talked into driving a 2020 Dodge Charger with a "scat pack". I know little about these cars. Supposed to have something over 500 HP. They want 52 K for it which seems high. But then today is a strange world. I did not check but expect it will require 93 octane.

 

[K4fxd]

Any amount of knock causes internal damage.

You don't know how these cars work.

" But the occasional brief knock is a useful tool for checking that the engine is operating efficiently. It's detected with one or more knock sensors bolted to the block to sense the oscillations created by the pressure waves with a typical frequency between 7 and 16 kilohertz. Stephen Russ, senior technical leader for gas engines at Ford, says this normal knock is usually detected and addressed within one or two combustion cycles and poses no threat to the engine. —ET

 

[WildHorse]

You don't know how these cars work.

So the knock sensors are precognitive ? Now if I can only get them to knock out some winning lotto numbers for me...

 

[T.O.Bullitt]

Then go pass a car @ 60 km/h in 4th like 99% of the peeps do and check your logs. Timing is only reduced AFTER knock is detected. Any amount of knock causes internal damage. That's not something I'm willing to trade off running lower octane fuels.

Your argument is illogical: the engine management system does the same thing no matter what octane you put in it. The car does not “know” what kind of fuel you’ve just put in it.
Of course there’s a 1% chance that some random dude on a car enthusiast forum named “Wildhorse” knows better than the engineers and accountants at Ford who say it’s ok to run 87 octane and stand behind their warranty as they say so, but I’ll stick with the 99% on this one, too.

 

[WildHorse]

some random dude on a car enthusiast forum named “Wildhorse”

Good one. Lemme guess.. you got the 100hp tune from International Dyno Authority didn't ya.

 

[T.O.Bullitt]

Good one. Lemme guess.. you got the 100hp tune from International Dyno Authority didn't ya.

Lemme guess: There’s not an awful lot to do in Mexico City, Manitoba?

 

[sk47]

Then go pass a car @ 60 km/h in 4th like 99% of the peeps do and check your logs. Timing is only reduced AFTER knock is detected. Any amount of knock causes internal damage. That's not something I'm willing to trade off running lower octane fuels.

Hello; I second guess the car builders in that I still change oil at around 3,000 miles or so even tho a greater number of miles is advertised. Guess I could be "wasting" some money that way. Thing is I do not always drive 3000 miles in a year, so I sometimes run up against the once a year I like to use as a standard.

I want to trust Ford on this thing about 87 octane being OK in a V8 Mustang. I figure Ford knows the engine will be pushed from time to time when they OK 87 octane. Here is where being old has some minor value in terms of experience. Back in the first decade of my driving engine knock was pretty much set. You knew if the engine could run on regular or needed hi-test and there was no debate.
During the second decade in the 1970's things went to crap. The emissions stuff made things iffy. Engines designed to run on regular could ( ping, detonate, knock) and often did so. They also would run on after you turned the key off for a while unless you had a manual. I got lucky in having a 1972 Porsche 914 with the 1.7 liter engine. It was the first car with fuel injection for me and I missed a lot of the grief.

Point being those 70's engines knocked a lot and survived longer than you might expect. I do not mean little knocks, but the kind you could hear clearly. I agree that the best knock in an engine is one that never happens. Things got better in the late 80's and much better in the 90's. I had a 1989 F-150 with two tanks. I put 87 in one tank and 91 to 93 in the other. If I was working the engine hard it ran on the 91-93. If I was just driving around it ran on the 87. If i heard a knock I switched tanks.

 

[WildHorse]

Lemme guess: There’s not an awful lot to do in Mexico City, Manitoba?

Dallas Manitoba actually. Plenty to do out here.

 

[WildHorse]

I want to trust Ford on this thing about 87 octane being OK in a V8 Mustang

Perfectly fine with the Mustang, I'm tryna explain other things, that some here no comprende on.

 

[T.O.Bullitt]

Perfectly fine with the Mustang, I'm tryna explain other things, that some here no comprende on.

“No compendre”?
So is it Dallas or Mexico City, make up your mind already!

 

[WildHorse]

“No compendre”?
So is it Dallas or Mexico City, make up your mind already!

Did you fail Canadian Geography ?

 

[K4fxd]

Dallas Manitoba, google maps show it does have a general store...

Reminds me when I lived in Martel Wi.

 

[WildHorse]

Dallas Manitoba, google maps show it does have a general store...

Mandi Mart. No need to go to the city.

 

[JoeSpeed]

The only place that wouldn’t let me pump my own in NJ were the stations on the turnpike. Everyone else knew to stay away.

ditto, why I fill up before or afterwards

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