Best fuels

Adam_Jones
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Adam_Jones
Edited Date/Time 11/5/2021 11:56am
I run AV100LL in my yz250 and everything else. Anyone else?
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Timo
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Timo 10/31/2021 7:47pm
10/31/2021 7:47pm
Adam_Jones wrote:
I run AV100LL in my yz250 and everything else. Anyone else?
91 octane E10 pump gas in my 450FX.
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brettmx
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brettmx 10/31/2021 8:44pm
10/31/2021 8:44pm
Adam_Jones wrote:
I run AV100LL in my yz250 and everything else. Anyone else?
Please make it stop.
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526
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526 11/1/2021 10:56am
11/1/2021 10:56am
Adam_Jones wrote:
I run AV100LL in my yz250 and everything else. Anyone else?
What is the compression?
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dmm698
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dmm698 11/1/2021 11:01am
11/1/2021 11:01am
Adam_Jones wrote:
I run AV100LL in my yz250 and everything else. Anyone else?
526 wrote:
What is the compression?
Enough to Ping on pump gas in a stock yz250 due to squish as delivered from factory....
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FoxTrav
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FoxTrav 11/1/2021 11:04am
11/1/2021 11:04am
Elf AVSP 11 VS (101 oct, unl, 2.6% oxy)
Elf HTX 976+ (fully syn)
40:1
'97 yz250

Runs like a dream and smells like candy!
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suspensionguy 11/1/2021 11:13am
11/1/2021 11:13am
Run it in my snox race sled and 50/50 in my 250sx. Race sled needs it. I run it in the 250sx to over octane it and smooth it out some, also running less compression then stock, if that doesn’t make you scratch your head I don’t know what will.
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MotoMan12345
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MotoMan12345 11/1/2021 11:15am
11/1/2021 11:15am
I used to always run 93 but recently switched to AV gas as it’s not much more then 93 with today’s gas prices. Runs a lot more crisp in my 250. Don’t notice a power change but definitely runs smoother
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Oleary465
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Oleary465 11/1/2021 11:20am
11/1/2021 11:20am
Pro 6 in 4 stroke, C12 in 2 stroke
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TeamGreen
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TeamGreen 11/1/2021 11:26am
11/1/2021 11:26am
T4 in the thumpers
T2 cut to 50:1 in the RM (cut with VPR)
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WhatsStoppingU 11/1/2021 11:54am
11/1/2021 11:54am
Boomslang wrote:
Take some time out and educate yourself.

Courtesy of our friends at MXA

https://motocrossactionmag.com/amp/racers-guide-to-the-hierarchy-of-mot…
That’s basically a VP ad. Anyone could have written that article with a little cut and paste action from the VP site. I would also bet the the MXA guys didn’t “sit down with VP execs” at any point for that “article” or probably ever…

Did you bother to look at it yourself? Why limit your fuel options to one brand?
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eric513anderson 11/1/2021 12:44pm
11/1/2021 12:44pm
I’ve ran T4 in my 250F since I bought it new. In my yz250 I’ve ran a 50/50 mix of C12 & pump 93. Last ride I did a 50/50 mix of T4 and pump. I liked that as well.
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kNewc
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kNewc 11/1/2021 12:54pm
11/1/2021 12:54pm Edited Date/Time 11/1/2021 12:54pm
T4 for sure. I ran out of pump gas the other day and had to put some in my push mower. Best smelling mow ever lmao (and probably most expensive).
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Boomslang 11/1/2021 1:19pm
11/1/2021 1:19pm
Boomslang wrote:
Take some time out and educate yourself.

Courtesy of our friends at MXA

https://motocrossactionmag.com/amp/racers-guide-to-the-hierarchy-of-mot…
WhatsStoppingU wrote:
That’s basically a VP ad. Anyone could have written that article with a little cut and paste action from the VP site. I would also bet...
That’s basically a VP ad. Anyone could have written that article with a little cut and paste action from the VP site. I would also bet the the MXA guys didn’t “sit down with VP execs” at any point for that “article” or probably ever…

Did you bother to look at it yourself? Why limit your fuel options to one brand?
I did not mean to offend anyone. Its just a interesting read and much info can be found relating to Avgas on various other forums.

I ran AV100LL in my 1993 CR250. Only mod was a FMF pipe and i tickled the jetting and timing a tad.

In 2009 we ran Avgas in our Pro Circuit CRF 150's with great results. Those bike were fast.

First pic, the dude on the RM is a young Calvin Vlaanderen #55. Caleb Tennant #444 has been training Deegan the past two years.














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526
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526 11/3/2021 7:39am
11/3/2021 7:39am
Adam_Jones wrote:
I run AV100LL in my yz250 and everything else. Anyone else?
526 wrote:
What is the compression?
dmm698 wrote:
Enough to Ping on pump gas in a stock yz250 due to squish as delivered from factory....
Pump gas with what Octane?
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TeamFlannel
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TeamFlannel 11/3/2021 11:28am
11/3/2021 11:28am
Adam_Jones wrote:
I run AV100LL in my yz250 and everything else. Anyone else?
All my old Moto buddies and I are running it, local air strip went out of business last fall and they scored 110 gal. @ $3.00 gal. We are all happy with it in YZ250,KTM300,Gas Gas 300 and 250,KTM200. It’ll be in everyone’s mowers, weed whackers, generators, and snow blowers as it doesn’t go bad like alcohol gas does.
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jjavaman
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jjavaman 11/3/2021 11:50am
11/3/2021 11:50am
Isn’t avgas designed to run in extreme cold temperatures and high altitude on low rpm airplane engines? I can see people using it in snowmobiles but regular dirt bikes?
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FGR01
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FGR01 11/3/2021 12:05pm
11/3/2021 12:05pm
jjavaman wrote:
Isn’t avgas designed to run in extreme cold temperatures and high altitude on low rpm airplane engines? I can see people using it in snowmobiles but...
Isn’t avgas designed to run in extreme cold temperatures and high altitude on low rpm airplane engines? I can see people using it in snowmobiles but regular dirt bikes?
At the risk of another AvGas debate.... (yeeessshh)....

Airplanes also takeoff and land on the ground, at sea level, and in temps up to 120 degrees.

I'm currently running AvGas in a small fleet of 2-strokes and they absolutely rip and the engines love it. The years of field testing are clear, dirt bikes love AvGas.. well 2-strokes anyway.
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GoggleFiend904 11/3/2021 12:29pm
11/3/2021 12:29pm
jjavaman wrote:
Isn’t avgas designed to run in extreme cold temperatures and high altitude on low rpm airplane engines? I can see people using it in snowmobiles but...
Isn’t avgas designed to run in extreme cold temperatures and high altitude on low rpm airplane engines? I can see people using it in snowmobiles but regular dirt bikes?
FGR01 wrote:
At the risk of another AvGas debate.... (yeeessshh).... Airplanes also takeoff and land on the ground, at sea level, and in temps up to 120 degrees...
At the risk of another AvGas debate.... (yeeessshh)....

Airplanes also takeoff and land on the ground, at sea level, and in temps up to 120 degrees.

I'm currently running AvGas in a small fleet of 2-strokes and they absolutely rip and the engines love it. The years of field testing are clear, dirt bikes love AvGas.. well 2-strokes anyway.
Yeah I always read it was designed to run at a certain RPM at high elevation.

Then read the most important part is taking off and landing.. so I’d imagine it’s more believable that it’s designed for that lol
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TeamFlannel
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TeamFlannel 11/3/2021 1:05pm
11/3/2021 1:05pm
Back in the day, late 70’s-early 80’s all the local fast dudes ran AV gas in their 100’s and 125’s. I remember the guy I bought my used 80’ YZ125 from at the end of the season said “run what you want, but I run AV gas through it with Bel-Ray MC-1 @ 50:1”
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RightHookNoCandy 11/3/2021 1:18pm
11/3/2021 1:18pm Edited Date/Time 11/3/2021 1:19pm
Idk why anyone still argues against running higher octane fuel in the 2 strokes (especially yz250s which have been known to not like pump gas even stock). I have been running 110 leaded in my YZ's for the last 9 years. Never paid more than $7.14/Gal for it. Renegade has pumps all over, if not that CAM2, Sunoco, etc.

Its cheap insurance not to destroy a cylinder.
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Bennett
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Bennett 11/3/2021 4:37pm
11/3/2021 4:37pm
At our campground, I run Sunoco Standard 110 in my 1989 E-Z-Go 3pg 2 stroke golf cart. Premixed at 128:1. Runs good, smells amazing!
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jridout12
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jridout12 11/3/2021 10:16pm
11/3/2021 10:16pm
I run 100LL cut 50/50 with 91 premium at 32:1 in my YZ125 and it loves it. I just run straight 91 premium in my stock 4 stroke and I've had no issues, I just make sure to fill up with fresh gas on the way to the track and put the leftover in the van. I tried T4 in the 4 stroke and found no difference other than the smell and a lighter wallet.
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CPR
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CPR 11/4/2021 12:57pm
11/4/2021 12:57pm
I’ve said this before and this debate has been done to death, but there’s one clear test that settles it:

Take any two stroke mx bike, whether it be a 2021 or 2001 model, run pump unleaded fuel for a piston change interval, let’s just say an arbitrary 30hours.
Change the piston and do 30 hours on avgas, remove that piston and compare the two.

You will never run pump unleaded again, if you have the choice.
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NSP139
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NSP139 11/5/2021 9:40am
11/5/2021 9:40am
Isn't 100AVLL low lead?
Jmicmoto13 11/5/2021 9:54am
11/5/2021 9:54am
CPR wrote:
I’ve said this before and this debate has been done to death, but there’s one clear test that settles it: Take any two stroke mx bike...
I’ve said this before and this debate has been done to death, but there’s one clear test that settles it:

Take any two stroke mx bike, whether it be a 2021 or 2001 model, run pump unleaded fuel for a piston change interval, let’s just say an arbitrary 30hours.
Change the piston and do 30 hours on avgas, remove that piston and compare the two.

You will never run pump unleaded again, if you have the choice.
Exactly right. When I lived in Florida and rode at Croom every weekend I used to go to the Dade City airport and get some 100LL to run in my 250SX. When I changed the piston in that bike after running AvGas, the top of the piston was clean you could eat off of it. Complete, clean combustion.

People love to hate on stuff other people do even if it works.
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Radical
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Radical 11/5/2021 10:40am
11/5/2021 10:40am
Why is anyone running leaded fuel? The pro's can't run it. Why is it even allowed at local tracks or races?
From what I've read, leaded fuel has caused more exposure to lead than any other source worldwide.
If it makes an engine last longer, so what. It's not worth it.
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FGR01
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FGR01 11/5/2021 10:47am
11/5/2021 10:47am
NSP139 wrote:
Isn't 100AVLL low lead?
Yes, the LL = Low Lead. "Low" in this case is relative to older formulations of aviation fuel that had more lead, not necessarily relative to other leaded race fuels, etc.
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lostboy819
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lostboy819 11/5/2021 11:46am
11/5/2021 11:46am
CPR wrote:
I’ve said this before and this debate has been done to death, but there’s one clear test that settles it: Take any two stroke mx bike...
I’ve said this before and this debate has been done to death, but there’s one clear test that settles it:

Take any two stroke mx bike, whether it be a 2021 or 2001 model, run pump unleaded fuel for a piston change interval, let’s just say an arbitrary 30hours.
Change the piston and do 30 hours on avgas, remove that piston and compare the two.

You will never run pump unleaded again, if you have the choice.
Jmicmoto13 wrote:
Exactly right. When I lived in Florida and rode at Croom every weekend I used to go to the Dade City airport and get some 100LL...
Exactly right. When I lived in Florida and rode at Croom every weekend I used to go to the Dade City airport and get some 100LL to run in my 250SX. When I changed the piston in that bike after running AvGas, the top of the piston was clean you could eat off of it. Complete, clean combustion.

People love to hate on stuff other people do even if it works.
Just a question, but makes you think a completely clean top of a piston is a good thing ? If the piston has carbon that goes all the way to the edges all around the piston top you are running too lean, if the top of the piston is completely washed clean then you are running rich there should be piston wash at the top of the piston around the transfer ports where the cooler fuel washes the top of the piston. A race engine running in the proper temperature range will not have a clean washed piston crown.
Most people think that running ave gas makes more power but if you are not denotating you don't need more octane and higher octane controls the burn rate at combustion, too much octane and you do NOT get a complete burn of the fuel and that is what washed the top of the piston clean.
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Jmicmoto13 11/5/2021 11:50am
11/5/2021 11:50am
CPR wrote:
I’ve said this before and this debate has been done to death, but there’s one clear test that settles it: Take any two stroke mx bike...
I’ve said this before and this debate has been done to death, but there’s one clear test that settles it:

Take any two stroke mx bike, whether it be a 2021 or 2001 model, run pump unleaded fuel for a piston change interval, let’s just say an arbitrary 30hours.
Change the piston and do 30 hours on avgas, remove that piston and compare the two.

You will never run pump unleaded again, if you have the choice.
Jmicmoto13 wrote:
Exactly right. When I lived in Florida and rode at Croom every weekend I used to go to the Dade City airport and get some 100LL...
Exactly right. When I lived in Florida and rode at Croom every weekend I used to go to the Dade City airport and get some 100LL to run in my 250SX. When I changed the piston in that bike after running AvGas, the top of the piston was clean you could eat off of it. Complete, clean combustion.

People love to hate on stuff other people do even if it works.
lostboy819 wrote:
Just a question, but makes you think a completely clean top of a piston is a good thing ? If the piston has carbon that goes...
Just a question, but makes you think a completely clean top of a piston is a good thing ? If the piston has carbon that goes all the way to the edges all around the piston top you are running too lean, if the top of the piston is completely washed clean then you are running rich there should be piston wash at the top of the piston around the transfer ports where the cooler fuel washes the top of the piston. A race engine running in the proper temperature range will not have a clean washed piston crown.
Most people think that running ave gas makes more power but if you are not denotating you don't need more octane and higher octane controls the burn rate at combustion, too much octane and you do NOT get a complete burn of the fuel and that is what washed the top of the piston clean.
Understood. I appreciate the insight. I also liked running it because it's some of the purest and most contaminant free fuel you can get due to what it's run in. And it doesn't have a shelf life and doesn't deteriorate.
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