Does the Fuel You Choose Matter? | Engine Masters | MotorTrend

Does fuel really matter for your engine? Watch as the Engine Masters team takes a scientific look at just how much power and performance are produced by different types of gasoline.

#EngineMasters #Gas #MotorTrend

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[jasonlevitt]

Not mentioned but important- to use E85 you'll need a fuel system capable of flowing 30% more than if using gasoline. So, injectors and pump (at a minimum) will need to be sized for E.

[CarsandCats]

I thing I do know is that when you run 110 in the lawn mower it blubbers out the exhaust and runs rich, but smells great. I was too lazy to go to the gas station :(

[SolamenteVees]

Love Engine Masters; they present the facts without too much minutiae and just enough levity.

[TL-angzarr]

On race engines it can get complicated. I have a 511 inch B1 motor with 15.2 to 1 compression that I ran forever on C14. Then a couple years ago my supplier had ran out of C14 but had some C25 in stock so I ran it. 2 more octane points but the car made its fastest pass ever by just over a 10th and on average was up by 5 hundredths with zero additional changes. Over time with tweaking the carbs the car gained a solid .125, gains like that are huge going from 7.90's to 7.70's with such a simple change.

[alexfreund]

I love running E85 (with a flex fuel system and slightly raised compression) because in my area it's about a dollar cheaper than 87 octane. It's about a break even with the loss of mileage but if you need the knock resistance, it's a great value!

[chuckselvage]

Octane isn't really about power it's about knock resistance.

[tedbear]

This show is one of my favorite things on Youtube plz more engine masters!

[tonymunn]

Very informative. I have a turbocharged Toyota 3TC engine running on propane. I'm sure it can't compare to any of those fuels power wise but, I can buy 500 gallons when it's cheap and It'll still be good a million years from now.

[gtbmjb]

Excellent video. Focused and accurate info and well explained as to what the test's purpose is and that power adders change the outcome and that this is a dyno room controlled atmosphere not an under the hood application. Takeaway for me is "use the recommended rating for a stock engine." Thanks Engine Masters.

[rileylilwell]

It would be cool to do this experiment with a boosted application, where the knock limitation does come in. I think there would be a WAY bigger variation in results👍🏼

[jasonpace]

I could watch this show all day please never stop making it

[gtbmjb]

Excellent video. As always it is up to us viewers to use the info correctly. I appreciate you stating that you would not change from the OEM fuel recommendations for street vehicles because of the underhood temps, etc. Very well balanced presentation.

[calvinevans]

It's designed for 91 octane. That's an awesome street engine.

[ragtopdlxzl]

Our LSA/6.2 with bolt on mods was at 585whp on 91 octane add E85 and we are at 630whp...Bore and stroke to 6.8 and we sit at 720whp. A bigger blower and an inner chiller would help. E85 is the most practical fuel for hp gains in my application.

[thomasvittetoe]

I’m sure doing this was a very expensive test to do in California 😂😂😂

[mikec]

Would have been a better test if the engine was boosted. You could show the detonation / knock values, along with the differences of the exhaust temperature of each fuel.
Then you could run E85 and show how much MORE volume you need to match gasoline.

[michaelsantosuosso]

I STILL CANT GET OVER FRIBERGER BEING 73 years thought he was like late 40s early 50s when first watching GOD BLESS U DAVID.

[PoppinACap]

I’ve loved this show for the main fact it taught me so much about “engine science” I guess you could say. I watched a lot of this show around the time I was building my first engine which was a TBI 350. I pretty much turned what would have been a borderline “stock” TBI i guess into one that would pull a little over 300 hp with more tq than intended. Can’t remember that number to be specific. I spent more money than what I needed to on a TBI but it’s knowledge I appreciate having now about them. In a time where a lot of people appreciate the 88-98 OBS Chevy trucks, its nice to have the knowledge to share with people and help them out with any issues, builds, and so forth.

[johnbehneman]

GREAT VIDEO DAVID!!! I ALWAYS LEARN SO MUCH FROM ENGINE MASTERS. PLEASE CONTINUE TO SHARE YOUR TRUTH.

[inertiaMS]

This doesn't really take into consideration how much you can beat up on engines with E85 vs pump, overheating, leaning etc etc E85 is so much more forgiving.