Search  for anything...

Gumout 5072866 Starting Fluid - starter fluid spray for gasoline engines and lawn mowers to inhibit corrosion and lubricate upper cylinders - Extreme weather, carb, air cleaner, or intake, 11 oz.

  • Based on 6,731 reviews
Condition: New
Checking for product changes
$10.62 Why this price?
Save $15.66 was $26.28

Buy Now, Pay Later


As low as $2 / mo
  • – 4-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.


Availability: In Stock.
Fulfilled by Fat Boy Tools

Arrives Sunday, Mar 2
Order within 4 hours and 56 minutes
Available payment plans shown during checkout

Size: 11 Fl Oz. (Pack of 1)


Style: Starting Fluid


Features

  • ALL-WEATHER - Gumout Starting Fluid spray helps engines start in all types of extreme weather, while conditioning fuel and engine parts to prevent friction and corrosion
  • USE ON GASOLINE - Not for diesel fuel. See your vehicle owners manual for special instructions for your vehicle
  • EASY TO USE - Spray directly into carburetor, air cleaner or air intake for a few seconds, then start engine. Do not flood engine before using. Do not start engine with air filter off. Keep engine off
  • PREVENTION - Inhibits corrosion and prevents friction while conditioning fuel and engine parts. Extends the life of engine parts
  • MULTI-PURPOSE - Use on all gasoline engines, including cars, vans, trucks, lawn mowers, tractors, rototillers, and more!

Description

Gumout Starting Fluid gives fast, smooth starting in all weather conditions. Contains an upper cylinder lubricant to help protect against wear especially at start up. It also contains a corrosion inhibitor to help prolong engine life. Directions: Shake can thoroughly before use. KEEP AWAY FROM BATTERY TERMINALS. Not for diesel fuel. See your vehicle owner’s manual for special instructions for your vehicle. Spray directly into carburetor, air cleaner or air intake for a few seconds, then start engine. Do not flood engine before using. In order to prevent a backfire, do not start engine with air filter off. Do not use while engine is running. Misuse of product can result in personal injury. Use only per label directions.

Manufacturer: ‎Rain-X


Brand: ‎Gumout


Model: ‎5072866


Item Weight: ‎0.185 ounces


Product Dimensions: ‎8 x 3 x 3 inches


Item model number: ‎5072866


Manufacturer Part Number: ‎5072866


Date First Available: January 16, 2007


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Mar 2

This item is non-returnable:

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Great for cars and lawnmowers. Stabilizes fuel to prevent future problems.
Size: 16 Fl Oz. (Pack of 1) Style: Multi-system Tune-up
I've used Gumout Multi-System Tune Up for both my cars and small engines in my lawnmower and generator. It seems to clean the system and improve performance very quickly. I tend to use it every 7k to 10k miles in my car and with every tank in my lawnmower and generator. I especially like the fact that it is supposed to be a fuel stabilizer as well as clean the system. This has been important to me for my lawnmower and generator. Prior to using any sort of additive in my lawnmower, I had left fuel in the tank over one winter and the next Spring it would not start very easy and would run rough. I added a significant amount of Gumout to the gas and ran it about 5 minutes, though took a while to start was still running rough. Tried it again the next day and the mower worked like new. I can only imagine that the Gumout got worked into the fuel system the day before and it cleaned out the gummed up ethanol overnight. Now I add about 1 oz of Gumout to each gallon of gas for my lawnmower. Since then, it runs perfect with no problems, even when leaving gas in the tank over Winter. For my car, I can definitely notice improvement in performance after using about a quarter tank of treated gas. I am not sure about the level of PEA in the mixture, but it seems to be enough for a mid-size car with an 18 gallon tank. For large vehicles, maybe two can would be necessary. The only thing I don't like about this product is the can. I know it is modeled after the Seafoam container, but it is difficult to use when adding to a car gas tank. Other Gumout products have long neck designs that make adding to the tank easily, it would be nice if this product had that design too. ... show more
Reviewed in the United States on July 12, 2024 by reviewer33

  • Works Well If Used Every 6 Months.
Size: 16 Fl Oz. (Pack of 6) Style: Multi-system Tune-up
Best to use every 6 months, sooner or later. Then change oil as the engine's carbon residue settle inside the engine after using Gumout. It is more highly recommended if your car is really old and not driven all the time. Do not wait to change your oil based on mileage but based only on time like 6-8 months after the last oil change. The oil scum settles at the bottom of the pan reservoir that needs to be drained at once to prevent oil sludge build up causing friction to the moving parts of the engine. ... show more
Reviewed in the United States on January 23, 2025 by upallnite

  • This worked for my vehicles.
Size: 16 Fl Oz. (Pack of 1) Style: Multi-system Tune-up
My vehicles are over 20 years old and this product has helped to keep the engines in good shape. I have been using it for about 5 years.
Reviewed in the United States on February 11, 2025 by Beachy Keen

  • Starting fluid
Size: 11 Fl Oz. (Pack of 1) Style: Starting Fluid
Works good,so far, good price
Reviewed in the United States on December 25, 2024 by gene

  • A hopefully good way to make amends for my non-top tier gasoline sins, and brought my riding lawn mower back to life!
Size: 16 Fl Oz. (Pack of 1) Style: Multi-system Tune-up
I had heard about this stuff from the Scotty Kilmer channel and Engineering Explained on YouTube. I have recently been on a spirit quest to do excellent preventative maintenance on my 2007 Nissan Altima 2.5 S now that I am using it for Uber and Lyft; driving about 1000 miles more a month than I used to. I read recently about the Top Tier rating system for fuel products and I realized with a sink in my stomach that for the past 37000 miles, I have been filling up at the Pilot gas station that is five minutes away from my house and it is a non-Top Tier station. My car had had no problems with the engine or fuel system and still hasn't (knock on wood), but regardless I wanted to do something to try to correct 37000 miles of the gasoline sin of using non-Top Tier gas that lacks the amount and quality of detergents that your Top Tier stations like Shell and Chevron have. I drove my car to nearly empty and pulled into the Shell gas station nearest me. Given that I have a twenty gallon capacity tank, I dumped the entire bottle of the Gumout into my fuel tank and added a fill of gasoline–17.86 gallons–on top of it to mix it in as the instructions said to do. I then drove my car to nearly empty with the Gumout/Gas mixture and just did my second fill up with only a Top Tier gasoline. Because my car had no problems like rough idle, slow acceleration, or what have you to begin with, I cannot say I have "noticed" any difference; but that doesn't mean there wasn't. For seven bucks and being approved by many reputable mechanics, I don't think my money was wasted and now that I am using Top Tier gasoline only I feel better about the longevity and reduced need for repairs my car is hopefully going to have. In summary: My car didn't have anything noticeably wrong that would allow me to observe a noteworthy improvement, but it didn't hurt my car either as far as I can tell; and it has the right cleaners and such for modern fuel injected vehicles. With that uninspiring part of my review over, I can now get on to the really cool NOTICEABLE benefit this stuff had: it was the Dr. Frankenstein to my mower that had been sitting unused too long! I went out to the ranch I manage to do some mowing and to my disappointment, the mower was dead and would not even start. I replaced the battery and was able to get it to start, but the idle was extremely rough and within a minute it spluttered and died. Noticing that the tank was maybe only 10% full, I went and got five gallons of fuel and added about 5 ounces of Gumout as per the instructions for four stroke small motor gasoline. I filled the mower up, shook the mower and let it sit for a minute, went to start it up, and COUGH PUTT COUGH PUTT COOUGHH VROOOOOOOOOOOOMMMMM!!!!! That baby coughed whatever gunky fuel and deposits had clogged up the fuel line or something and fired up! It ran smoothly from startup to intentional shutdown and I knew that I had the Gumout to thank for that. A further benefit of the Gumout too is that it is apparently a fuel stabilizer, so the other 2.5 gallons that is going to sit untouched in the can for up to four months is going to be good to go! All in all, I am pleased with the stuff. Be an educated purchaser: do your research and make sure it is going to be correct and useful for your application, but sometimes it is just fun to use "snake oil" type items like this and just see what happens (when they have been approved for safety by the appropriate agencies when used according to instructions, of course). Thanks for reading my review, I hope it helps you to make your purchasing decision! ... show more
Reviewed in the United States on February 27, 2018 by EagleEyeHuntsTTV

  • Good Product.
Size: 16 Fl Oz. (Pack of 1) Style: Multi-system Tune-up
My mechanic told me to try using it in my Honda Civic LX. My car runs a lot smoother now daily. Great stuff.
Reviewed in the United States on December 21, 2024 by Alex Boyd

  • Serves its purpose
Size: 11 Fl Oz. (Pack of 1) Style: Starting Fluid
Use this starter fluid for my lawn equipment and it starts on the first time! It keeps my equipment in tip top shape!
Reviewed in the United States on January 5, 2025 by Carlos H. Davila Jr.

Can't find a product?

Find it on Amazon first, then paste the link below.