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Fuel Additives

minifridge1138

Well-known member
Joined
Feb 2, 2007
Messages
908
Location
USA
Corvette
1982 Black Fastback
I just thought i would open this to a general discussion:
What, if any, fuel additives do you put in your corvette? There are tons of octane booster and cleaning additives in your local auto parts store, but what is your favorite?

The only one I've tried is Lucas' tune up in a bottle.

Any other recommendations?
 

fine69

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Joined
Dec 12, 2004
Messages
975
Location
Maryland / D.C.
Corvette
'69 Convertible Vette; '72 Z28 Camaro Rally Sport
Although I've never used octane boosters, I've used Seafoam additive in the past and it did a good job. Last Fall I added Sta-Bil gas stabilzer for the long winter rest. I start it up once a week without problems, so I think it helps.
:Twist
 
Joined
Jan 1, 2002
Messages
7,246
Location
Washington, Michigan
Corvette
'67 Marina Blue Convertible
All the detergent additives your fuel system needs are already blended into pump gas. Your car doesn't need any "lead substitute", and the "octane boosters" are snake oil; don't waste your money. :eyerole
 
B

bmotojoe

Guest
I will agree detergent additives or octane boosters are snake oil products, but it is a fact that the new fuels produced today degrade much faster then fuels produced years ago. The unleaded fuels of today have a shelf life of about 30 days before it starts to degrade. If your pride and joy sits in the garage for any extended period of time then I recommend Sta-Bil Fuel Stabilizer. I have used this product for years in my Corvette and other gas powered equipment with excellent results.
Brian
 

bradfordsvettes

Well-known member
Joined
Mar 28, 2001
Messages
549
Location
Boston, MA area
Corvette
jewel blue 61.cranberry 69 t-top.black rose 92
techron is the only fuel system cleaner recommended by G.M. and it does work as designed also available from G.M. under there label Steve
 

jhecox

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Joined
May 11, 2006
Messages
1,178
Location
Auburn Hills-MI
Corvette
2016 Corvette Racing Yellow, Z51, OURS C7
I'd like to know where I can get some of the stuff Mikie and crew tried in the ol' #55.:boogie
 

80convertible

Well-known member
Joined
Jan 26, 2001
Messages
416
Location
Asheville, NC
Corvette
1973 converted to 1980 custom convertible
Ask the 5 drivers in Nascar that just got busted for using fuel additives illegally
 
Joined
Jul 28, 2003
Messages
1,765
Location
Frankfurt/Germany
Corvette
1982 Collector Edition
Zip, Nada, Zilch..

And she sits in a unheated geerage over the winter and starts right up in the spring. And as many know, i aint no mechanic either.. :D


If she ran rough, i would run Techron through it for the injector cleaners, that'll be it.

:w
-Stefan
 

mlazinski

Active member
Joined
Jul 8, 2005
Messages
25
Location
Tampa FL
Corvette
1975 Silver Coupe
Sea Foam on a C3

I was wondering if anyone with a C3 has used the Sea Foam in their Shark, all of the posts in the thread linked in this thread was from C5's. Any problems? The reviews of this product seem great, like a no-brainer.
 
Joined
Oct 7, 2006
Messages
295
Location
South Dakota
Corvette
76 Coupe
I put that sea foam in my weed eater and it ate the fuel pump diaphragm. guess what I won't use in my vette.
 

wallyknoch

Well-known member
Joined
Nov 9, 2002
Messages
457
Location
Dearborn
Corvette
One owner unrestored Black 1962 FI Corvette
The only thing I use from our chemical inventory in the parts store is some carb cleaner for my 62 FI Vette. And this too is probably of dubious value. All the rest will only benifit the chemical company that makes it and raise the price per gallon of the pump gas. :upthumbs A lose, lose senerial. :L
 

fine69

Well-known member
Joined
Dec 12, 2004
Messages
975
Location
Maryland / D.C.
Corvette
'69 Convertible Vette; '72 Z28 Camaro Rally Sport
I was wondering if anyone with a C3 has used the Sea Foam in their Shark, all of the posts in the thread linked in this thread was from C5's. Any problems? The reviews of this product seem great, like a no-brainer.


Yeah, I've used it ... look at my post above....
 

muddywaters

Well-known member
Joined
Aug 25, 2002
Messages
765
Location
wilkes-barre,pa.usa
Corvette
1988 white 4+3 coupe 99 Torch Red 6spd. coupe
I had a loud injector in my 88, used Lucas Gas Treat, nice and quiet now. I disagree with previous post on modern day gasoline degrading sooner. Never used Sta-Bil, local well known mech. says don't us unless car sits the whole year, who knows?
 

Vettehead Mikey

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Joined
Aug 26, 2003
Messages
3,486
Location
Not that far from Ottawa
Corvette
1973 Coupe
Seafoam is effective in addressing certain types of problems - typically dissolving gummed up gasoline deposits caused by years of neglectful storage, but it does not have magical powers to cure problems that do not exist in the first place.

That's what petrified voodoo chicken bones are for, available on eBay. :rotfl
 

Evolution1980

Well-known member
Administrator
Joined
Feb 25, 2002
Messages
4,302
Location
Cleveland, Ohio
Corvette
ZZ4, 700R4, Steeroids rack & pinion, VB&P Brakes
According to my mechanic, who I trust entirely, higher octane gas deteriorates faster ("slowly converts to a varnish"). The only additives I use is Sta-Bil during winter storage. It goes in everything in my garage. Vette, motorcycle, and lawn equipment.

I've tried octane boosters and whatnot. They made no difference, as proven on my dyno runs. Even the supercars with tricked out engines and 11:1 or higher compression didn't even require higher than 100 octane during a magazine's shootout. Our cars should be just fine on 97-98 octane if everything else is tuned and running correctly.
 

minifridge1138

Well-known member
Joined
Feb 2, 2007
Messages
908
Location
USA
Corvette
1982 Black Fastback
97-98 octane?
Where do you live?! I think my best premium is 93, maybe 95.
Of course, i probably have some of the cheapest gas in the country. This week gas spiked to $2.20 a gallon for regular.
 

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