Anyone tried running regular 87 Octane fuel in their TRX?

[ShortIDProduct]

fuel cost was one of the variables I considered when debating on getting one of these trucks. If fuel was guaranteed to stay around 2 bucks for the foreseeable future then heck yeah i would've bought that truck a while ago. Sure I could still afford it if gas hit $5 or higher but with a wife and child to support, then the joy just becomes a financial burden. I think we all saw that coming when uncle Joe came stumbling in.

 

[Electric1995]

How does ethanol free 93 octane do in these trucks ? I just went D1 today so I still have a while before I’ll have mine.

 

[ExT]

Lesson for OP. You need to keep in mind that whenever you post an unpopular question, even just out of curiosity, all You can get, most likely, are moral lectures that “you shouldn’t buy $100K truck if you blah blah blah”.
if I was you, and really wanted to do it, I’d just fucking do it and have everything documented.

 

[cpost6]

Say you drive 12,000 miles a year and get 10 mpg. You'll buy 1200 gallons of gas in a year. The current difference between regular and premium (for Tennessee at least, according to AAA) is $0.627/gallon. So you'll save a whopping $752 over the course of a whole year. Is it really worth the potential issues with your engine, not to mention the reduced performance? You'll only be saving $63/month.

Yep, anyone worried about the cost of fuel doesn’t need to be driving a TRX!

 

[CC1999]

Lesson for OP. You need to keep in mind that whenever you post an unpopular question, even just out of curiosity, all You can get, most likely, are moral lectures that “you shouldn’t buy $100K truck if you blah blah blah”.
if I was you, and really wanted to do it, I’d just fucking do it and have everything documented.

Yea, tell me about it. LOL Wow .

All I asked was if anyone else had tried Regular 87 octane and what they had experienced.
I did it in pinch where I was on fumes and the station was out, saw 0 issues with my truck, the computer seemed to compensate for the lower octane just fine. I have 4 other pretty expensive vehicles as well as 50 some odd trucks in my business fleet. I am really not all that worried about it.

But if 91 is not really necessary, I just kind of wanted to know that, and if nothing is really being gained by using it high octane on regular bases, except maybe a few HP under the hood in a truck that can easily spare a few ponies just in normal everyday driving.

In my case my TRX is mostly a garage queen anyway.
It is really not my daily, once in while I might drive it a few days in row.

With my last 6.2L 2018 Chevy Silverado, High octane was recommended for peak performance, even though a lot of people always took that to mean it was required and actually it was not required. Only recommended.

I ran 87 in that 6.2L chevy the whole time I had it, never had spark knock ever and truck ran great, fuel mileage was still decent at 15-18 mpg. Which is pretty much what I had seen from the TRX when I got stuck that time having to run 87, didn't have much if any downside to it that I could tell. But only ran the one tank through it, so no long-term testing.

 

[RobR651]

Yea, tell me about it. LOL Wow .

All I asked was if anyone else had tried Regular 87 octane and what they had experienced.
I did it in pinch where I was on fumes and the station was out, saw 0 issues with my truck, the computer seemed to compensate for the lower octane just fine. I have 4 other pretty expensive vehicles as well as 50 some odd trucks in my business fleet. I am really not all that worried about it.

But if 91 is not really necessary, I just kind of wanted to know that, and if nothing is really being gained by using it high octane on regular bases, except maybe a few HP under the hood in a truck that can easily spare a few ponies just in normal everyday driving.

In my case my TRX is mostly a garage queen anyway.
It is really not my daily, once in while I might drive it a few days in row.

With my last 6.2L 2018 Chevy Silverado, High octane was recommended for peak performance, even though a lot of people always took that to mean it was required and actually it was not required. Only recommended.

I ran 87 in that 6.2L chevy the whole time I had it, never had spark knock ever and truck ran great, fuel mileage was still decent at 15-18 mpg.

I hear ya man, people can go off fairly easily on forums. I think the consensus is it’s a high horsepower supercharged motor that requires premium. The safest bet is to follow the owners manual. Your last 6.2 wasn’t supercharged I assume? I do know that 91 is the only premium available in my area and I got what was likely a less than stellar tank of 91 from a chevron and the truck ran somewhat off. My next fill up was 91 from Shell and the truck performed way better. I do think it is very sensitive to fuel from that experience… I could be wrong.

 

[MEATSWORD]

Hey its your truck do what you want buddy

 

[thewrx]

Just dont do any long highway pulls, and hopefully its pretty cold outside.

More load = more risk

Maybe keep a can of torco, or a small jug of vp101 in the truck if you run into this situation often.

 

[thewrx]

Big difference between your bowtie 6.2 and trx is that motor was n/a and DI, so octane not as important generally speaking.

 

[Xmarinecpl]

I would say DO NOT USE CHEAP GAS!! I accidentally put 87 octane in and when I noticed it was a little over 1/2 tank. I finished wit 93 and then put octane boost in the fuel to help, and 1bout 2o miles later I blew the motor. 4 cylinders went belly up. I have a lot of made to the truck so it was not under warranty. Long story a new racing motor later was roughly 15K out of pocket. The only positive side is I now have a monster engine that can withstand all of the mods and is pushing close to 1400 HP with the nitrous.

 

[Xmarinecpl]

Oh, and the original motor had only just over 3,000 miles when it blew.

 

[Cromin8tor]

I would not recommend it. In a pinch if nothing else is available you have no choice. I bought the vehicle knowing that premium is a requirement, so for me, it is not an issue.

If don’t mind having your warranty voided go for it! The dealership will be able to tell via your on board computer.
The owners manual specifically states you must use 91 octane fuel

 

[HTX_TRX]

If you overextended yourself on the purchase of the truck and can’t afford the required gas…maybe you should sell it while prices are still reasonably high

 

[RobsTRX]

I start the fill up with 93 till the card limit hits and then on the next card insertion I use 89 to blend. I have a incognito and even with the extra boost I had no problem. I did 89 on a highway trip to Florida and It didn't seem to change much. Your not going to blow it up with 89. It's not just a matter of can we afford it I believe its about being ripped off by the actions of an inept POTUS that make us pissed

 

[CC1999]

I just asked if anyone was running it.
I have multiple vehicles in my stable , and no problem affording the fuel for the truck.

I was Just curios from those who know first hand how the truck handles it.
Not looking for lectures from owners manual police.

I am 100% sure the motor is not going to blow just because I put 87 octane in it.
I have done it and saw no change at all.

I was simply curious if anyone else tried it and what their experience was.
if you have never tried it, then the question this thread posed or is based on does not apply to you .

No need to lecture me, it’s my truck , if it gets damaged from 87 octane gas , and it won’t , but if it did, I can buy another one. But I really have no doubt this trucks computers and sensors can easily compensate for few octane variations.
Gas stations , pumps, etc etc can easily get mixed up, I have seen it happen.
Manufactures know this, no way this truck was put out In public hands without being able to compensate for variations in octane levels.

 

[BEECHFRONT]

I would say DO NOT USE CHEAP GAS!! I accidentally put 87 octane in and when I noticed it was a little over 1/2 tank. I finished wit 93 and then put octane boost in the fuel to help, and 1bout 2o miles later I blew the motor. 4 cylinders went belly up. I have a lot of made to the truck so it was not under warranty. Long story a new racing motor later was roughly 15K out of pocket. The only positive side is I now have a monster engine that can withstand all of the mods and is pushing close to 1400 HP with the nitrous.

Big difference putting 87 in a modded tuned engine vs 87 in stock factory engine

 

[OnTheReel]

I just asked if anyone was running it.
I have multiple vehicles in my stable , and no problem affording the fuel for the truck.

I was Just curios from those who know first hand how the truck handles it.
Not looking for lectures from owners manual police.

I am 100% sure the motor is not going to blow just because I put 87 octane in it.
I have done it and saw no change at all.

I was simply curious if anyone else tried it and what their experience was.
if you have never tried it, then the question this thread posed or is based on does not apply to you .

No need to lecture me, it’s my truck , if it gets damaged from 87 octane gas , and it won’t , but if it did, I can buy another one. But I really have no doubt this trucks computers and sensors can easily compensate for few octane variations.
Gas stations , pumps, etc etc can easily get mixed up, I have seen it happen.
Manufactures know this, no way this truck was put out In public hands without being able to compensate for variations in octane levels.

Manufacturers know that if you receive bad gas, or fuel grades get mixed up at the gas station, they aren’t paying for that damage anyway.

My honest advice. Someone else’s experience running the wrong gas doesn’t help you at all given the amount of external variables. Ambient temperature, humidity, load, elevation, etc. If you really want to know how the truck handles it, buy a Trinity or similar device and data log the KR on 87. Let’s see just how much magic the magic computer can do on 87 octane with this effective compression ratio. As if it wasn’t working hard enough to make 700hp on 91.

 

[thewrx]

Big difference putting 87 in a modded tuned engine vs 87 in stock factory engine

Yep lets hope you (OP) dont get another batch of bad gas with that 15k motor…

I would be curious if your tq/hp estimates change at all using lower octane (aka your pulling timing = less powar)

 

[Terahok]

If don’t mind having your warranty voided go for it! The dealership will be able to tell via your on board computer.
The owners manual specifically states you must use 91 octane fuel

Is this the same dealership(s) everyone complains about not knowing shit about these trucks?

 

[Somefun]

If the TRX is like other modern vehicles, they sense detonation and retard the spark accordingly. Retarding the spark = less power. So you are theoretically making lower power.

That said....With a supercharged engine ............You want to AVOID detonation like the plague !!!!!!!!!!!!!
Keep in mind the only thing holding these engines together (high compression and high boost) is the COMPUTER and its ability to orchestrate fuel, spark, etc. Stick to the 91 or 93, its not worth a "big bang" event.

Exactly! This is a super charged motor and for the extra 7.00 for better octane should not even be a question. The ECU can only retard so much timing.....DON'T DO IT! If you can't find the right octane you should carry boostain octane booster to help out. I will be keeping a few cans under the rear seat just in case. If you do put lower octane in because you have too you better be keeping your foot off the peddle and staying out of a boost situation.