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Your cart is empty.Looking to be the small engine pro? Well, now it is easy! Introducing STA-BIL Small Engine Pro. Whether you are just looking to keep a piece of equipment running like new or you have a piece of equipment that needs a simple tune-up this additive is for you. This multi-system additive is great in your oil or gas. When added to your oil this will lubricate and free sticky valves and pistons adding a layer of protection in your crankcase while also helping to quiet noisy engines. If adding to your gasoline it will help clean out gum and varnish to restore lost engine power and reduce any rough running issues. It also has powerful corrosion inhibitors to protect against water-attracting ethanol-blended fuels. This is a great can to keep around the garage for any small engine equipment you may have. It works great in mowers, leaf blowers, snowblowers, chainsaws, weed whackers, generators, and more! Effective in both 2 and 4 cycle engines. We recommend using this product in season to keep your engine running at its optimal performance.
EDWARD B.
2025-08-30 12:54:00
If you are having a small engine fuel problem try this before anything else. Have a 4 wheeler that acted like choke was staying on and a lawn mower that acted like running out a fuel. Put this in both and within a quarter later tank both problems gone and running better than ever.
S. D. Johnson
2025-07-29 18:49:11
I damaged one of the mower spindles early in the spring of '23 and then never got around to fixing it. The gas had Stabil in it but the engine ran rough (bad), especially when engaging the blades after repairing the spindle. After draining as much of the old fuel as I could this spring, I used two kinds of Seafoam, the spray straight into the carb and then a high concentration of the Multi-System Additive into the fuel. The engine spit and sputtered for a good two minutes and then smoothed out. When engaging the blades (more load) before the Seafoam, the engine would almost kill and then backfire and run even rougher. After the Seafoam, that didn't happen. I'll never use anything else.
jimmy b
2025-06-22 17:52:31
I use it as an additive for my small outdoor equipment engines , works great.
Michael K.
2025-06-07 14:54:14
The lawnmower seems to run smoother after putting this in the gas tank. It’s a very large bottle & given the amount that should be used, it should last a few seasons.
Kenneth J. Albright
2025-06-03 18:20:57
Did what it says it does...great product..easier motor starts and quieter and smoother running....
Customer
2025-04-14 21:19:34
Just what i was looking for.
FL_Sparky
2025-03-18 16:17:48
Since Briggs and Stratton quit making my preferred additive for small engines, I have been testing out alternatives. Since I already use Sta-bil Storage to treat my fuel, I decided to try this product and their other product Small Engine Fix in hopes of finding something comparable to the 5-in-1 and I was happily surprised by both of Sta-bil products. This product is a great additive to your fuel and even the oil on 4 strokes small engines. It has helps to keep mine and my customers small equipment purring along swimmingly. See my review of Small Engine Fix if your equipment just isn't reving up like it used to.
Rich from OP
2025-02-16 11:31:02
I have used this and Seafoam regularly for many mowers that I have found discarded on the side of the road. I drain the old gas from the tank and bowl, refill with fresh gas and this product. Squirt the carb with starting fluid and get it running. It may be rough running at first but it eventually smoothes out. I also use it for my mowers every spring. I love this stuff and highly recommend it.
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