87 octane vs 91 octane

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

swathdiver

Full Access Member
Joined
May 18, 2017
Posts
21,299
Reaction score
30,254
Location
Treasure Coast, Florida
I proposed to my wife in Edgewater, on that restaurant ship that I hear is no longer there. Favorite little town in NJ was Morristown, so quaint and peaceful back then, everyone was relaxed and friendly and the chow was delicious. We've had lunch in Hoboken before and my wife has taken our daughter to Carlo's Bakery.

All this and we've never lived there! Just passing through or staying on the NJ side for the airport, car rentals and hotels, versus staying in the city and paying more for everything.
 

GTNator

Senior Member
Joined
Jul 24, 2017
Posts
1,291
Reaction score
868
I worked and lived in Manhattan for a year and loved everything about it. Walking everywhere, the restaurants, food, entertainment...but that was back before I had a wife and kids. Manhattan is great for when you're either young and single or older and empty nester...but that's probably true for most cities, a great place to be if you don't need a big yard and light traffic for kids.
 

Scottydoggs

Full Access Member
Joined
Dec 16, 2017
Posts
2,883
Reaction score
4,525
Location
NJ
Bay Ridge is where that house is on the tv show Blue Bloods. I used to take family over to Hackensack to visit the USS Ling museum. Up in River Vale is the stern plate from the USS Enterprise (CV-6), the last piece of her next to a little league field and the library.


skip the trip to the ling in the future, its closed. they got tossed out of the lot there, sub is still in the river, but no more tours are going on.

i live in hackensack, i drive by it daily. the military museums took all they deemed worth taking. guess the rest will go for scrap. the sub is stuck in the mud. river is no longer deep enough to take it else where if they could break it out of the mud. and the river is not part of the lease for the land. i hear the owner of the land gave the ling a lifetime lease for a buck years ago. well he died, his son took over and gave em the boot. condos will soon be built is my guess. with a ww2 sub in the river for a eye sore, as it looks like hell, has for years.
 

swathdiver

Full Access Member
Joined
May 18, 2017
Posts
21,299
Reaction score
30,254
Location
Treasure Coast, Florida
skip the trip to the ling in the future, its closed. they got tossed out of the lot there, sub is still in the river, but no more tours are going on.

i live in hackensack, i drive by it daily. the military museums took all they deemed worth taking. guess the rest will go for scrap. the sub is stuck in the mud. river is no longer deep enough to take it else where if they could break it out of the mud. and the river is not part of the lease for the land. i hear the owner of the land gave the ling a lifetime lease for a buck years ago. well he died, his son took over and gave em the boot. condos will soon be built is my guess. with a ww2 sub in the river for a eye sore, as it looks like hell, has for years.

I know, it's a shame. Last time we visited her bow and stern were rotted away but it was repaired at some point later, after 2005. I think the cement or that yard across the way offered to dock her there, don't think she can get under that bridge either without torches.

If I were king the US Navy would be charged with maintaining those museum ships as memorials and recruiting tools. It would not be a big thing for the US Navy to run her through a shipyard service, or at least the US Navy that used to do much of its own work! Ling was unique in that she was kept in her WW2 condition and not updated. She did not see combat being completed too late to see service like the Bowfin, Cavalla, Pompanito, Drum, Batfish, etc. which are all highly decorated museum ships and combat veterans.

It is a blight on a nation that forgets her past and removes the ancient landmarks; CV-6, The Big "E" being another.
 

Scottydoggs

Full Access Member
Joined
Dec 16, 2017
Posts
2,883
Reaction score
4,525
Location
NJ
pretty sure that whole site was privately funded. sad to see it rotting away. im sure if they tried to pull it out it would fall apart. and the two bridges down river, both are brand new. not sure if the one that used to turn can still turn or not after the rebuild or not. but i hear you can walk across the river there, might be chest deep, but not deep enough, then the bridges are only 12 foot or so from the water line.

i think its fate is sealed in the hacky, rusty grave.
 

Miami-Dade

Staff member
Moderator Supporting Member
Joined
Dec 8, 2016
Posts
4,216
Reaction score
5,564
We've had lunch in Hoboken before and my wife has taken our daughter to Carlo's Bakery.

Had to go to a Birthday Party in Little Falls yesterday so picked up a German Chocolate Cake at Carlo's in Hoboken since I was not far from it. It was AWESOME!! I generally get cakes all the time at Carlo's Bakery in Manhattan at 42nd and 8th. Always at least 60 people in front of me [no matter what time of day or night] but the line moves fast enough and worth the wait.
 

Wambliokiye

Full Access Member
Joined
May 3, 2018
Posts
186
Reaction score
120
Location
Reno, NV
James I on the road this week so tried 2 tanks of 93 Exxon-Mobil. I was down to 50 miles left to empty when I tried my first tank of 93. I generally never let the gas get that low. I did not get better mileage but I have zero complaints on the mileage am I getting. I did not notice any more power out my 5.3. A least not that I noticed.

Some people [not you] think there are magic powers when you use 93 octane. I am back to running 87.

I generally use the same octane all the time so the engine does not have to adjust to different octane levels.

All that is just me. To each their own.


Have you noticed a faint knock at all? 87 faint knock 91 real faint knock. Any advise?
 

Miami-Dade

Staff member
Moderator Supporting Member
Joined
Dec 8, 2016
Posts
4,216
Reaction score
5,564
Have you noticed a faint knock at all? 87 faint knock 91 real faint knock. Any advise?

No faint knock at 87. I would hear it real quick if it did as my ears are tuned for it. On other vehicles I did get faint knock at 87 and real faint knock at 91 using Chevron and Sunoco. I stick to only using [when possible] Exxon-Mobil fuels.
 

swathdiver

Full Access Member
Joined
May 18, 2017
Posts
21,299
Reaction score
30,254
Location
Treasure Coast, Florida
We cannot hear all knocks, but the knock sensor can! My engine's computer would record a couple (1 or 2) at the top of each gear at WOT even when burning 93.
 

Miami-Dade

Staff member
Moderator Supporting Member
Joined
Dec 8, 2016
Posts
4,216
Reaction score
5,564
We cannot hear all knocks, but the knock sensor can! My engine's computer would record a couple (1 or 2) at the top of each gear at WOT even when burning 93.

How did you find that information?
 

Scottydoggs

Full Access Member
Joined
Dec 16, 2017
Posts
2,883
Reaction score
4,525
Location
NJ
audible ping and knock retard are not really the same thing.

knock retard pulls timing to keep the knock down. ( trying to save its self) on a boosted set up kr is what chips yer pistons up. then you own a paper weight lol

my regal is supercharged, for every degree of kr it gets, it pulls two degrees of timing, so get like 8º kr and you just lost 16º timing, and yup, car falls on its face hard.

funny part is thats a true event, back when it was all stock, 8º kr factory tune. no mods. oh, and it ran 16º wot timing stock tune, so it was neg degrees timing at times. thanks GM lol
 

Scottydoggs

Full Access Member
Joined
Dec 16, 2017
Posts
2,883
Reaction score
4,525
Location
NJ
you need a live scanner to scan for knock too. the torque app works very well for it.

higher octane, generally, less kr. why e85 adds like free hp almost, its got a much higher octane rating, so you can run more timing in your tune.
 

Vector

Full Access Member
Joined
Sep 18, 2013
Posts
246
Reaction score
64
Location
South Florida
James I on the road this week so tried 2 tanks of 93 Exxon-Mobil. I was down to 50 miles left to empty when I tried my first tank of 93. I generally never let the gas get that low. I did not get better mileage but I have zero complaints on the mileage am I getting. I did not notice any more power out my 5.3. A least not that I noticed.

Some people [not you] think there are magic powers when you use 93 octane. I am back to running 87.

I generally use the same octane all the time so the engine does not have to adjust to different octane levels.

All that is just me. To each their own.

I use to run 87 in my 2007 Sub (with a 5.3) without ever having a problem.

Now that I have the large engine with the 2015 Escalade I try to use 93 unless it is some ungodly price. I'll add enough 87 to keep me going until I can get to a Costco where prices are as much as $.30 less per gal.
So I cannot say I've ever run just straight 87 in it, as it is blended with the 93 still in the tank. However thus far, when I have added say 10 gallons of 87, I have not noticed any problem. As to mileage and get up and go, I have not really checked that.
 

swathdiver

Full Access Member
Joined
May 18, 2017
Posts
21,299
Reaction score
30,254
Location
Treasure Coast, Florida
Not that I know of.
It is not badged that way, but I imagine Caddy's wouldn't carry that badge even if it were (for the upscale cosmetic look).

I must say I am still more of a Sub guy, but certain things on this Escalade are nice.

Even if there are no badges, it would have a yellow gas cap if it were. They sure are nice! That is what sets them apart!

I mentioned E85 as an even less expensive alternative if your motor can burn it.
 

Scottydoggs

Full Access Member
Joined
Dec 16, 2017
Posts
2,883
Reaction score
4,525
Location
NJ
I mentioned E85 as an even less expensive alternative if your motor can burn it.


i wish we had e85 here in NJ, id have been on it years ago.

and then id take my stock regal injectors ( cause they are larger then stock 5.3) and use them in the tahoe and run that pig on corn too.

have tuner in hand, you can pretty much do as you like with fuel, timing and so on.

but no corn for me, best i can do is meth/water injection. its almost as good for raising the octane rating of your fuel. and cooling the blower down. i have a ic as well, cool engine, hit the starting line at the track one pass, no way your touching the blower. add meth, i can give it a long ass kiss if i wanted to, its only warm at best now.
 

swathdiver

Full Access Member
Joined
May 18, 2017
Posts
21,299
Reaction score
30,254
Location
Treasure Coast, Florida
i wish we had e85 here in NJ, id have been on it years ago.

and then id take my stock regal injectors ( cause they are larger then stock 5.3) and use them in the tahoe and run that pig on corn too.

have tuner in hand, you can pretty much do as you like with fuel, timing and so on.

but no corn for me, best i can do is meth/water injection. its almost as good for raising the octane rating of your fuel. and cooling the blower down. i have a ic as well, cool engine, hit the starting line at the track one pass, no way your touching the blower. add meth, i can give it a long ass kiss if i wanted to, its only warm at best now.

My first car was a '79 Regal Sportcoupe with the carbureted V6 Turbo. It had a defunct water injection system that I got going again and would add rubbing alcohol to the water in the tank, had these little jets to change out for more or less. It allowed me to run a few more pounds of boost, from 8 to 11 I think but that was a long time ago. Fun stuff.
 

Scottydoggs

Full Access Member
Joined
Dec 16, 2017
Posts
2,883
Reaction score
4,525
Location
NJ
My first car was a '79 Regal Sportcoupe with the carbureted V6 Turbo. It had a defunct water injection system that I got going again and would add rubbing alcohol to the water in the tank, had these little jets to change out for more or less. It allowed me to run a few more pounds of boost, from 8 to 11 I think but that was a long time ago. Fun stuff.


oh for sure. i was on a 3.2 pulley and 14º wot timing. all she would take with out knocking like a ****** bed lol

added meth kit, dropped to a 2.8 pulley, and got the tune to take 21º wot finally since i got a hpt tuner. for some reason the DHP was not getting the job done so well. i worked it to 19 wot, got 3 more with hpt.

had a friend in the car the other day, dropped the hammer and he locked up grabbed the JC bar for dear life till i let off lol hes not had a hell ride since its been re tuned to 21º.

odd thing is ive heard tails of running super aggressive timing, from the bottom up will kill kr. so thats what i tried. on the line brake boosting it at the track i used to be at 14, now 21. and now it just stays at 21 through the whole rpm range, even after a shift, still 21. no kr but a blip at the shifts thats no higher then one full degree, i can so deal with that little bit.

my timing file graph looks like the mountain the guy from close encounters of the third kind was building the whole movie lol

003.jpg
 

Forum statistics

Threads
137,808
Posts
1,992,697
Members
102,794
Latest member
Drewphil

Latest posts

Back
Top