wemay
Site Donor 2023
No, I've almost always done so with turbocharged engines due to their high compression. I know the manual says 87 or higher. I might try another tankful of 87 down the line.
Switching to Premium gasoline
- Thread starter Al
- Start date
Makes sense to be on the safe side I suppose.
Ford swore up and down on all they considered to be good and pure and holy that my intermittent cam phaser issue on my 2018 F150 5.0 was spark knock (PINGGGGGGG) until I managed to get a few good clear seconds of it on video. They couldn't deny it after that.
I don't think many people who really have started driving in just the last 15 years or so really understands what true ping sounds like.
They told me REPEATEDLY to use hi-test because I was hearing PINGGGGGGGGGING. I did, for a while - even though the old man in me who knew what ping really sounds like was positive that they were wrong. They only thing hi-test did for me was increase a tank of gas by 20$
I also tried ethanol free (huge waste of money, and I tried that in my Mustang for quite some time also) and on a vacation I ran about 4 tanks of E85. The only noticeable difference was on E85.
E85 does give a nice little noticeable jolt on my 2.7 eco - but it's not available where I live. Plus, I need a noticeable jolt on top of what I normally get out of 87 E10 in that motor like I need an extra rectum. I generally run 2 tanks of hi-test right now about every 6 months or so back to back. Why? Because it MIGHT clean stuff up a bit. It also might not. But I do it anyways. And with a 36 gallon tank, I'm out about 70$ for what I know is probably placebo effect.
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according to pure-gas.org NH has 58 stations with E0
Even my GDi Accord non turbo in this extreme weather of heat gets 89 TT and then I might go back and forth with 87. Occasionally I find 93 or higher and will atleast top of with it. Like to have the avg Octane number around 88+.
Ha truth! I mean, my mom had an '87 Camry when I was in HS and I drove it...if you didn't run at least 89 it pinged like crazy, I remember making it do it b/c it was funny....just lug it and ping-a-ling-a-ping! E-free is dumb IMHO on any modern vehicle. E is the way for knock resistnace and it doesn't hurt a thing...10% E....the mpg difference isn't enough for anyone to notice.
Just took a trip in our Atlas, 1K miles, 87 in that GDI non-turbo VR6 through the mountains in 90+ deg F heat and it said hold my beer, I didn't note any issues.
Yes, to this.
Which axle ratio have you, K-Man?
Ranger owners praised "regular gas".
Then I saw the knock sensor and KNEW our SOHCs didn't "run on regular", they, "didn't knock on regular".
Summer driving in hilly terrain is better with premium gas in the tank. The engine advances and actually exhibits pep.
It's not "the dreaded 4.0 SOHC", but I will say the "universal head" design which requires engine removal to address the right timing cassette is plainly stupid.
Well it doesn't have 350,000 miles on it either...
Yeah, had the Mustang tuned at 93 and don't put many miles on it so it really doesn't cost me anything.
Edge 2.7EB has always used 91-93. Runs great. I will always fill with the 91 E0 when I come across it (like last weekend).
Sonata has always used 87, but I do weird things with it like warming it up during the winter before driving and 10k OCI's, so octane isn't really a thing...
Edge 2.7EB has always used 91-93. Runs great. I will always fill with the 91 E0 when I come across it (like last weekend).
Sonata has always used 87, but I do weird things with it like warming it up during the winter before driving and 10k OCI's, so octane isn't really a thing...
wemay
Site Donor 2023
Wow! That's great. The issue with me is i remote start due to the heat lately and also idle some waiting in the elementary school pickup train line. LOL.
My best on 93 is 30mpg/tank, almost all city. I will give 87 a try. Your numbers impress me.
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I do a lot of hwy and don’t have a lead foot. XOM 87 seems to do pretty for my use case.
3.55:1 because the truck has the factory tow package. That was the standard axle ratio with that package. The truck has plenty of punch with that rear axle ratio. On the Ranger forums a popular modification is to get a lower (numerically higher) ratio with an axle or differential swap, but I don't see the need.
Me, I hope I can get a lot more trouble-free miles before having to change the timing cassettes by using premium and avoiding knocking altogether.
+1 for 87. My wife's 2020 Equinox w/ 1.5L gets 32-33mpg on average, with mixed driving, mostly suburban with minimal traffic and plenty of stoplights. I've only run TT 87 in her car, usually Shell, XOM, or QuikTrip.
To K-Man:
I have the 4.10 LS and I've gotten >20mpg when highway driving was included.
Can't do better than 16-17 when poopin' around town.
I tally my fuel use every 2 months.
The other BIG thing we can do to maintain our T-chain guides/tensioners is to employ "Clear Flooded Engine" for 3-4 seconds, THEN start as normal.
Turn ignition key to ON position...dash board lights up
Depress the gas pedal all the way to the floor and hold it there. You've shut off the spark and fuel delivery.
Crank engine for 3-4 seconds. This supplies oil pressure to the timing components, particularly the oil filled tensioners.
Release key and accelerator pedal and start as normal.
You'll hear a noticeably quieter start-up.
BITOG Note: When first I learned of this, I'd crank the engine until the oil idiot light went out.
The good people here said it was a great way to burn my starter up.
I took the advice of one member who just cranked it a couple of seconds.
When I'm driving errands, the engine restarts quietly all day long.
Ergo, I've only needed to 'prime' the oiling system at the top of the day.
Perhaps driving your SOHC to work then starting it >8 hours later is better with priming.
Also keep in mind that those big, cylindrical tensioners should be changed at 100k miles.
Also, while similar, the two tensioners are different part numbers. Also, they come with a thin metal gasket too.
Pain: My truck was in the middle of an OCI when I got it. Months later, doing my first oil change on it, I used Castrol 0W-30 European.
The truck ran quieter than ever I'd heard before. And no, it wasn't any wishful thinking.
Later on, I heard about priming the oiling system.
So, my poor truck was banging around on unknown oil and dry started all its life. Boo-Hoo.
I have the 4.10 LS and I've gotten >20mpg when highway driving was included.
Can't do better than 16-17 when poopin' around town.
I tally my fuel use every 2 months.
The other BIG thing we can do to maintain our T-chain guides/tensioners is to employ "Clear Flooded Engine" for 3-4 seconds, THEN start as normal.
Turn ignition key to ON position...dash board lights up
Depress the gas pedal all the way to the floor and hold it there. You've shut off the spark and fuel delivery.
Crank engine for 3-4 seconds. This supplies oil pressure to the timing components, particularly the oil filled tensioners.
Release key and accelerator pedal and start as normal.
You'll hear a noticeably quieter start-up.
BITOG Note: When first I learned of this, I'd crank the engine until the oil idiot light went out.
The good people here said it was a great way to burn my starter up.
I took the advice of one member who just cranked it a couple of seconds.
When I'm driving errands, the engine restarts quietly all day long.
Ergo, I've only needed to 'prime' the oiling system at the top of the day.
Perhaps driving your SOHC to work then starting it >8 hours later is better with priming.
Also keep in mind that those big, cylindrical tensioners should be changed at 100k miles.
Also, while similar, the two tensioners are different part numbers. Also, they come with a thin metal gasket too.
Pain: My truck was in the middle of an OCI when I got it. Months later, doing my first oil change on it, I used Castrol 0W-30 European.
The truck ran quieter than ever I'd heard before. And no, it wasn't any wishful thinking.
Later on, I heard about priming the oiling system.
So, my poor truck was banging around on unknown oil and dry started all its life. Boo-Hoo.
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Turbo = HEAT = Premium
Patman
Staff member
The one way to know for sure is to have a scan tool hooked up while you’re driving and see if the computer is pulling any timing out while using 87 octane. If it’s not, then the use of anything higher is just wasted money.
With some of my high performance cars I was finding that timing was getting pulled out when I ran 91 octane and no timing was pulled with 94. In my Corvette I can actually hear mild pinging at part throttle (and around 1500-2000 rpm) if I use 91 octane but it goes away with 93-94. The manual recommends 93 (but strangely enough, the earlier C7s recommended 91 even though the engines are identical in every way)
With some of my high performance cars I was finding that timing was getting pulled out when I ran 91 octane and no timing was pulled with 94. In my Corvette I can actually hear mild pinging at part throttle (and around 1500-2000 rpm) if I use 91 octane but it goes away with 93-94. The manual recommends 93 (but strangely enough, the earlier C7s recommended 91 even though the engines are identical in every way)
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I got a 2024 Audi A4 Quattro four-door sedan four-cylinder with turbo and it recommends high octane/premium gasoline. It will destroy the motor if you don’t run this.
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