PremiumGasMiledge is it worth it ?

Horsehammerr · Post by **Horsehammerr** » Thu Mar 25, 2010 8:31 am

I was just made aware of a change here in good ole Mo. Our premium gas no longer has any corn alcohol in it. I know that crap is a big problem with MPG. I wonder if .20 cents extra per gallon will be worth it ??

killian96ss · Post by **killian96ss** » Thu Mar 25, 2010 9:22 am

Ethanol is bad and good. It makes more power and burns cleaner than gasoline, but it also lowers your gas mileage. It's hard to say if the 20 cent increase will balance out?

Steve

roadrunner · Post by **roadrunner** » Thu Mar 25, 2010 6:23 pm

Tried premium non alcohol in mine and it did not pencil out. Slightly better mpg but not enough more to offset the higher price compared to regular non alcohol gas. Before anybody asks I did a five tank comparison of both over the same roads in the same conditions. There's my

worth.

WileyHunter · Post by **WileyHunter** » Thu Mar 25, 2010 6:56 pm

I've been having really good mileage with a blend (and I know I'm gonna hear someone yelling at me), of SuperUL and 100LL AvGas. I have been using 5 gals of 100LL to the tank. Yes, I know we have a pre-cat & cat to worry about, BUT when I run that blend I get 25mpg!!! Hard to worry about those darn pesky cats when you're doing that well...

Horsehammerr · Post by **Horsehammerr** » Fri Mar 26, 2010 1:22 am

roadrunner wrote:Tried premium non alcohol in mine and it did not pencil out. Slightly better mpg but not enough more to offset the higher price compared to regular non alcohol gas. Before anybody asks I did a five tank comparison of both over the same roads in the same conditions. There's my worth.

If non alcohol regular was available in Missouri I would not even consider premium, but the premium is only 2-3 dollars more per tank full. I'll give it a try.

Jongo88 · Post by **Jongo88** » Fri Mar 26, 2010 5:24 pm

Keep us posted on how it works out...

Horsehammerr · Post by **Horsehammerr** » Sat Mar 27, 2010 2:12 am

Jongo8 wrote:Keep us posted on how it works out...

I'll do that. I just topped off with 12.8 gals. of Phillips 66 91oct. I figure after a couple fillups it should be 100% premium. I'll keep the best records I can and pass them along

LUVMY02CREW · Post by **LUVMY02CREW** » Sun Mar 28, 2010 7:42 am

WileyHunter wrote:I've been having really good mileage with a blend (and I know I'm gonna hear someone yelling at me), of SuperUL and 100LL AvGas. I have been using 5 gals of 100LL to the tank. Yes, I know we have a pre-cat & cat to worry about, BUT when I run that blend I get 25mpg!!! Hard to worry about those darn pesky cats when you're doing that well...

Gonna show my ignorance here, but could you please explain what you mean by SuperUL and 100LL???

I'm just not familiar with those terms used to describe gas.... and that 25mpg has me really intrigued.

Thanks

roadrunner · Post by **roadrunner** » Sun Mar 28, 2010 7:55 am

SuperUL=Premium unleaded. 100LL=100 octane low-lead gas. And yes, the low lead gas will eventually ruin the cats on our trucks. The lead coats the active element in them (platinum) and they cease to function after that and can begin to build up with contaminates and eventually plug up to the point of either need for removal or replacement.

LUVMY02CREW · Post by **LUVMY02CREW** » Sun Mar 28, 2010 8:14 am

roadrunner wrote:SuperUL=Premium unleaded. 100LL=100 octane low-lead gas. And yes, the low lead gas will eventually ruin the cats on our trucks. The lead coats the active element in them (platinum) and they cease to function after that and can begin to build up with contaminates and eventually plug up to the point of either need for removal or replacement.

10.4 and thanks...
I kinda thought thats what SuperUL meant, but had no idea about 100LL.
I don't have a precat anymore, but I definately don't want to ruin my main cat, so thats a no go for me on the 100LL....thanks for the heads up

WileyHunter · Post by **WileyHunter** » Sun Mar 28, 2010 10:16 am

Actually, the paperwork from the refinery shows an average Octane Rating of 120's to 130's. I've NEVER (in over 10 years of taking deliveries) seen less than 120.

As far as the Lead content:
As of Jan 2010, 100LL has a TEL content of 1.2 to 2 grams TEL per US gallon (0.3–0.5 g/l) and is the most commonly available and used aviation gasoline. One gram of TEL contains only 3/5 of a gram of lead.
I'm not sure how long the build-up would take, even if I were to use 100LL straight, but remember, I said I'm using a blend of 5 gals of 100LL to the balance of the tank of Super/Premium UL. So 1 tank (theoretically) would contain ~3.6 to 6 grams of lead. Doesn't seem like much to me. There's one guy in town that runs straight 100LL in his '05 Mustang, and has since new, no problems with the cat's to this point. I guess we'll see <?>.

Horsehammerr · Post by **Horsehammerr** » Sun Mar 28, 2010 2:33 pm

WileyHunter wrote:Actually, the paperwork from the refinery shows an average Octane Rating of 120's to 130's. I've NEVER (in over 10 years of taking deliveries) seen less than 120.

As far as the Lead content:
As of Jan 2010, 100LL has a TEL content of 1.2 to 2 grams TEL per US gallon (0.3–0.5 g/l) and is the most commonly available and used aviation gasoline. One gram of TEL contains only 3/5 of a gram of lead.
I'm not sure how long the build-up would take, even if I were to use 100LL straight, but remember, I said I'm using a blend of 5 gals of 100LL to the balance of the tank of Super/Premium UL. So 1 tank (theoretically) would contain ~3.6 to 6 grams of lead. Doesn't seem like much to me. There's one guy in town that runs straight 100LL in his '05 Mustang, and has since new, no problems with the cat's to this point. I guess we'll see <?>.

I do understand the improvement with the lead, but I don't see lowlead for sale in Missouri. I wouldn't worry about the Cat on mine, it's just an expansion chamber, gutted it out about a year ago. Did it to get rid of the loose rattle in it. Didn't effect a thing.

WileyHunter · Post by **WileyHunter** » Sun Mar 28, 2010 5:48 pm

Horsehammerr wrote:I do understand the improvement with the lead, but I don't see lowlead for sale in Missouri.

Closest I see to you (based on your profile info) is ~10 miles away, at Taney Co. Airport. http://www.airnav.com/airport/PLK, but from the looks of it, it's D@MN3D expensive there... Use that link/site to shop around for a better price, or try http://www.100LL.com. I wouldn't expect to pay more than $1.00/gal more than Super/Premium UL, but at larger airports the price goes up (some small, way out of the way airports are high priced too) best bet is just shop around like you would any other fuel.

Horsehammerr · Post by **Horsehammerr** » Mon Mar 29, 2010 2:22 am

WileyHunter wrote:
Horsehammerr wrote:I do understand the improvement with the lead, but I don't see lowlead for sale in Missouri.
Closest I see to you (based on your profile info) is ~10 miles away, at Taney Co. Airport. http://www.airnav.com/airport/PLK, but from the looks of it, it's D@MN3D expensive there... Use that link/site to shop around for a better price, or try http://www.100LL.com. I wouldn't expect to pay more than $1.00/gal more than Super/Premium UL, but at larger airports the price goes up (some small, way out of the way airports are high priced too) best bet is just shop around like you would any other fuel.

Thanks WileyHunter !!

I know of three private airports in 15 mile radius of me, just didn't click to look there.

S-10CREWCAB.NET

PremiumGasMiledge is it worth it ?

PremiumGasMiledge is it worth it ?

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