Which Fuel Stabilizer (plus A Separate 1-year Headlight Restoration Kit Durability Check-in) Brand Wins?

did not stop the corrosion; some pitting and pretty bad damage to the metal; narrator says it's hard to believe how big the difference is compared to Sta-Bil

looked a lot better than Star Tron, with a small amount of corrosion/sludge; performed a lot better than Star Tron and definitely better than untreated fuel; received a corrosion rating of 2, second best behind Sta-Bil's rating of 1

did not stop the water-contaminated E10 fuel from causing a tremendous amount of corrosion to the pot metal; quite a bit of corrosion, described as nasty-looking

plenty of corrosion on the metal, though it looked better than the metal in the SeaFoam container

did experience some corrosion but not as much as untreated fuel; the treated fuel itself turned very dark, almost as dark as used motor oil

the two-stroke oil did not prevent corrosion; quite a bit of damage to the metal

slightly harder than the untreated baseline

a very small amount softer than baseline, briefly the best result before Sta-Bil was tested at 48.5

identical to the untreated baseline, no protective effect

identical to the untreated baseline

just a little softer than average, a minor effect

the same as the untreated baseline

was not able to keep the fuel fresh, and it would not light; part of the group of products rated 5 (worst) on the flammability scale

did not look too bad but was pretty stale; part of the group of products rated 5 (worst) on the flammability scale

was not going to light at all; part of the group of products rated 5 (worst) on the flammability scale

in pretty bad shape; part of the group of products rated 5 (worst) on the flammability scale

too stale to run; wasn't any more successful than SeaFoam; part of the group of products rated 5 (worst) on the flammability scale

did not hit hard at all and would not ignite without a lot more added heat; part of the group of products rated 5 (worst) on the flammability scale

fired right up in about 2.5 seconds with no starting fluid needed, ran the smoothest yet at that point, spark plug looked pretty clean afterward, described as 'definitely the best yet' in this specific test; tied Sta-Bil for the best generator-test rating of 3

needed a little help from ether to start; engine sounded a little rough but did not need starting fluid; spark plug looked really good, about as clean as Star Tron's; finished third on the generator-test rating at 3.5

needed 21 shots of starting fluid to finally get hot enough to burn, versus only 2 shots for untreated gasoline; ran with a lot more smoke than untreated gas and only powered the halogen lights for a few seconds; spark plug picked up a lot of carbon, though narrator notes uncertainty whether that was combustion residue or SeaFoam's known cleaning action

needed a shot of ether to start, producing a big puff of smoke, but did not need a follow-up shot of starting fluid; spark plug had quite a bit of carbon on it for such a short engine run

needed a little help from starting fluid to get going, then didn't need more; spark plug wasn't too bad but not quite as clean as Sta-Bil's

tested last, deliberately, since it was expected to create the most carbon; needed a shot of starting fluid to start, produced a large puff of two-stroke smoke, ran rough and nearly stalled but recovered, held up under the halogen light load though sounding poor; ended with more spark plug carbon build-up than most of the other products

drying towels, purifying compound, surface activator, UV block clear coat, and sandpaper

oxidation remover wipes, 1 surface prep pad, several grits of sandpaper, 2 ceramic clear coat wipes, and 4 application gloves

an assortment of sandpaper, a disc pad holder, and rubbing compound; requires a drill to use

patches for step one and 2 patches for step two, plus a UV sealant protection pouch

a precision wipe-it, professional lens polishing pads, nitrile gloves, and one microfiber towel; was the least expensive kit in the original lineup

a drill attachment, sanding disc, premium polishing pad, and several other items

cleaning pads, a cleaning solution, and headlight coating

treats up to 48 gallons of gasoline, under 10 cents per gallon; claims to stabilize fuel, improve performance, and clean the fuel system; made in USA; contains pretty much 100% hydrotreated light petroleum distillates

claims to treat up to 16 gallons, about 75 cents per gallon; claims to stabilize fuel for up to 2 years; made in USA; contains ethylene glycol plus alcohol-based ingredients

made in USA; contains petroleum distillates, a hydrocarbon-based solvent, and alcohol

does not claim to be a fuel stabilizer, tested anyway; claims to improve compression, power, and MPG; made in USA; contains hydrotreated light petroleum distillates, phosphoric acid, and a couple of dichlorobenzenes

petroleum distillates

washed the headlight, used the oxidation remover wipes, scrubbed with a surface prep pad and water for 3 minutes, additional sanding, dried, then sealed with the ceramic clear coat wipes; took about 15 minutes total

cleaned with soap and water, sanded away the oxidation using several grits, then applied rubbing compound for a smooth finish; took about 10 minutes total; did not include a protective coating

cleaned and dried the headlight, used two oxidation removal wipes for close to 5 minutes, then applied the protective coating top to bottom and cured it for 24 hours

wetted the lens with water and used a green polishing pad to remove oxidation, but made little progress before the pad was used up; applied a protective coating afterward; took about 11 minutes total

cleaned and dried the lens, sanded with the drill attachment until the yellow coating was removed, polished with the premium buffing polish, then sealed with premium wipes; took about 9 minutes total

cleaned with the pads and solution until achieving a uniform frosted appearance, then applied two coats of the headlight coating

second place; did a much better job than most other brands at providing a clear headlight finish

tied for third place with Rain-X, described as too close to call

sixth place; the restoration wipes could not remove all the oxidized material, though the top coat did reduce its appearance

fifth place; did a decent job removing oxidation, but the protective coating was not as smooth or transparent as some other brands

tied for third place with 3M

seventh (last) place; did not include an abrasive or cleaning solution strong enough to remove all the previous oxidation