Modern gas mixed with Race Fuel?

[jww426]

Im thinking of this:

In addition to Phenolic spacers, fuel additives for ethanol protection, thermo-taping of fuel lines, and perhaps mixing in some leaded race fuel–––maybe a few gallons per tankful––I believe this will be a good mix for all my old carbureted cars. And of course both my Chargers.

Any thoughts, recommendations, and precautions? Will leaded race gas and modern gas (93 oct) be compatible?

Am I aspiring to be a mad chemist? ––Don't answer that!

Thanks much,
JWW

[moparnation74]

My answer is Yes!  I mix 50:50, 93 octane and 110 leaded race fuel.  The 93 up to 10% ethanol based here I add an octane booster, lead additive, and Star Tron enzyme fuel treatment.  Yes, sometimes I believe I am a mad chemist, lol.  Every weekend I cruise in it I add 5 gallons to the tank.

What is also beneficial with me doing this I am constantly recirculating fresh gas through the system.

[jww426]

I also use Marvels mystery oil---a few ounces--because gas in the old days had a lot more lubricants than it does now.
JWW

[jww426]

A good article on phenolic plates and additives:

http://www.hotrod.com/how-to/additional-how-to/1408-mixing-new-fuel-for-old-cars/

[moparnation74]

A good article on phenolic plates and additives:

http://www.hotrod.com/how-to/additional-how-to/1408-mixing-new-fuel-for-old-cars/

Great article, thanks for sharing

Never thought of MMO, I will look into that

[jww426]

This is interesting: real T-lead:

www.OctaneSupreme.com

[c00nhunterjoe]

I run 93 with the minimum 10% ethanol. No additives. Never had problems.

[moparnation74]

I run 93 with the minimum 10% ethanol. No additives. Never had problems.

That's fine if you routinely drive your car weekly.  Some of us do not and we have additives to reduce phase separation and protective additives for mechanicals. 

[chargerbr549]

And don't forget race fuel smells awesome, that's reason enough to use it! LOL

[c00nhunterjoe]

I run 93 with the minimum 10% ethanol. No additives. Never had problems.

That's fine if you routinely drive your car weekly.  Some of us do not and we have additives to reduce phase separation and protective additives for mechanicals. 

Mine also sits from november thru marchish untouched. (Salt season in pa) i dont have any fancy tricks or additives in the gas. If you are concerned about the fuel, put stabil in it while it sits. If you want it to smell like a race car, then buy the grape fuel additive. Adding "race gas" to your stock car will do nothing but hinder performance.

[moparnation74]

I run 93 with the minimum 10% ethanol. No additives. Never had problems.

That's fine if you routinely drive your car weekly.  Some of us do not and we have additives to reduce phase separation and protective additives for mechanicals.  

Mine also sits from november thru marchish untouched. (Salt season in pa) i dont have any fancy tricks or additives in the gas. If you are concerned about the fuel, put stabil in it while it sits. If you want it to smell like a race car, then buy the grape fuel additive. Adding "race gas" to your stock car will do nothing but hinder performance.

I lived in PA myself, so I am familiar with your salt season and cabin fever, lol.  My car is not 100% stock.  Here is an article from Sunoco I think you may want to read about mixing race gas with regular fuels.http://www.racegas.com/article/index

How many points do you think 110 mixed 50:50 is going to increase from 93 octane?  Not as much as you think.  Maybe around 100 octane. Yes, it acts as an octane booster but that is the only refined leaded fuel I can purchase and it lasts longer.  So I use it for booster/storage/leaded additive.

Why do you think during long term storage you fill the tank up with ethanol based fuels?  Well that is to limit phase separation.  Hopefully, when you store your ride during those months it is on a full tank.  Ethanol fuel treatments are cheap insurance in my books.

Also, to each is own but I would not use Stabil if it was free. Just my opinion.  I have been doing this mix for years and never had performance/separation problems.

[c00nhunterjoe]

I run 93 with the minimum 10% ethanol. No additives. Never had problems.

That's fine if you routinely drive your car weekly.  Some of us do not and we have additives to reduce phase separation and protective additives for mechanicals.  

Mine also sits from november thru marchish untouched. (Salt season in pa) i dont have any fancy tricks or additives in the gas. If you are concerned about the fuel, put stabil in it while it sits. If you want it to smell like a race car, then buy the grape fuel additive. Adding "race gas" to your stock car will do nothing but hinder performance.

I lived in PA myself, so I am familiar with your salt season and cabin fever, lol.  My car is not 100% stock.  Here is an article from Sunoco I think you may want to read about mixing race gas with regular fuels.http://www.racegas.com/article/index

How many points do you think 110 mixed 50:50 is going to increase from 93 octane?  Not as much as you think.  Maybe around 100 octane. Yes, it acts as an octane booster but that is the only refined leaded fuel I can purchase and it lasts longer.  So I use it for booster/storage/leaded additive.

Why do you think during long term storage you fill the tank up with ethanol based fuels?  Well that is to limit phase separation.  Hopefully, when you store your ride during those months it is on a full tank.  Ethanol fuel treatments are cheap insurance in my books.

Also, to each is own but I would not use Stabil if it was free. Just my opinion.  I have been doing this mix for years and never had performance/separation problems.

You are correct, to each his own.... enjoy wasting alot of money on 110. Its not cheap and im pretty sure your engine doesnt need it. Im also pretty sure that unless you are either running an 11:1 iron headed mill, or are living on a mountain, the 110 IS inhibiting your performance. Maybe not a ton, but it is. The biggest factor is the money you are spending on it. But its your money, so spend it on what you like i suppose.

[moparnation74]

I never mentioned that cost per gallon was a concern.  It's not.  And your performance concerns do not match my engine builder's recommendations and the dyno results. 

[c00nhunterjoe]

I never mentioned that cost per gallon was a concern.  It's not.  And your performance concerns do not match my engine builder's recommendations and the dyno results. 

Noone here knows what is in your engine. So before reccomending to another member that mixing 50/50 110 race gas in their car is a good idea, perhaps some more details on your engine would be a good idea first.

[moparnation74]

I gave an example, not a recommendation.  There is a bit of a difference in that statement.  The op was asking if it is ok to mix a few gallons in a full tank.  I said yes, then gave an example.  Do you read the full posts or just look at pictures?

[c00nhunterjoe]

I gave an example, not a recommendation.  There is a bit of a difference in that statement.  The op was asking if it is ok to mix a few gallons in a full tank.  I said yes, then gave an example.  Do you read the full posts or just look at pictures?

The op said he was thinking about mixing race gas in all of his carbureted vehicles and asked for thoughts and reccomendations and warnings. You replied with "my answer is yes!"  Note your exclamation point.... if that is not a reccomendation, then im not sure what else that opening statement could have meant.
   You still havnt said what type of build you have and why your machinist said you need to mix 50/50 110 and 93? I am curious. details such as heads, decking, pistons, cam profile, you know, important info that will help with fuel examples

Your sarcastic comments will get you nowhere with me so dont waste your time being a keyboard badarse.

[Kern Dog]

And don't forget race fuel smells awesome, that's reason enough to use it! LOL

Oh hell yeah!  I ran leaded 110 in the Charger when I was trying to determine the octane requirements to eliminate detonation. It smelled like 1975 again.

[c00nhunterjoe]

And don't forget race fuel smells awesome, that's reason enough to use it! LOL

Oh hell yeah!  I ran leaded 110 in the Charger when I was trying to determine the octane requirements to eliminate detonation. It smelled like 1975 again.

Lol. Yeah, its hard to beat the smell. The closest i have found is this stuff. Very close aroma. 1 bottle goes a pretty long way and summit now carries it i beleive.

[Kern Dog]

That picture is NOT actual size, is it?

[c00nhunterjoe]

Lol, no. Its sitting on my window sill

[moparnation74]

I gave an example, not a recommendation.  There is a bit of a difference in that statement.  The op was asking if it is ok to mix a few gallons in a full tank.  I said yes, then gave an example.  Do you read the full posts or just look at pictures?

The op said he was thinking about mixing race gas in all of his carbureted vehicles and asked for thoughts and reccomendations and warnings. You replied with "my answer is yes!"  Note your exclamation point.... if that is not a reccomendation, then im not sure what else that opening statement could have meant.
   You still havnt said what type of build you have and why your machinist said you need to mix 50/50 110 and 93? I am curious. details such as heads, decking, pistons, cam profile, you know, important info that will help with fuel examples

Your sarcastic comments will get you nowhere with me so dont waste your time being a keyboard badarse.

I relayed the reasons why I use it and the benefits.  The yes your so focused on was to his questiin mixing a few gallons with a full tank.  Whether you understand that or not at this point, I really do not care.  You just want to go around and around and I have much better things to do with my time. 

[jww426]

My own opinion, as a retired pro racer, not a mechanic, ( my crew chief wouldn't let me help at all) is thus:

From a few knowledgeable mechanics I know, they have related that if you have a few old cars in a barn, consider the ethanol treatment and a few ounces of Marvels. Gas in the old days had more lubricants like diesel.--Do not mix in diesel!

For high performance engines like my Hemi, its not a bad idea to mix in a gallon or two of race fuel. (10.28:1 with a roller cam) It doesn't knock on super 93, but I sure don't want to detonate a piston on a fresh rebuild either. Also I drive the heck out of it.

My 61 Lincoln with a 430 ci knocks even on super. It needs some juice.

Mechanics Ive queried say that lead will help preserve fuel too. Stabil can gum up valves, be careful and use sparingly.
Just my thoughts on a nice fall morning in Virginia.

[c00nhunterjoe]

I gave an example, not a recommendation.  There is a bit of a difference in that statement.  The op was asking if it is ok to mix a few gallons in a full tank.  I said yes, then gave an example.  Do you read the full posts or just look at pictures?

The op said he was thinking about mixing race gas in all of his carbureted vehicles and asked for thoughts and reccomendations and warnings. You replied with "my answer is yes!"  Note your exclamation point.... if that is not a reccomendation, then im not sure what else that opening statement could have meant.
   You still havnt said what type of build you have and why your machinist said you need to mix 50/50 110 and 93? I am curious. details such as heads, decking, pistons, cam profile, you know, important info that will help with fuel examples

Your sarcastic comments will get you nowhere with me so dont waste your time being a keyboard badarse.

I relayed the reasons why I use it and the benefits.  The yes your so focused on was to his questiin mixing a few gallons with a full tank.  Whether you understand that or not at this point, I really do not care.  You just want to go around and around and I have much better things to do with my time.