Best Two-Stroke Oils: Get Your Engine Running Smoothly
Keep your bike or boat running smoothly with the best two-stroke engine oil
The Drive and its partners may earn a commission if you purchase a product through one of our links.Read more.
PUBLISHED ON June 23, 2019
From dirt bikes to chainsaws, two-stroke engines are aplenty. To function well, they require regular maintenance and a high-quality motor oil designed for their particular configuration. That translates to needing a two-stroke oil. Read on to find out everything you need to know about the best two-stroke oil for your needs.
- Best OverallLucas Oil Semi-Synthetic 2-Cycle OilSummarySummaryA great all-rounder oil, this one is especially suited for oil injection systems where no fuel or oil premixing is required.ProsProsSmokeless, clean burn, low ash production, and easy to mix. Also boasts ISO GD and JASO FC and FD standard certifications.ConsConsNot the best option for yard tools or other similarly small motors where mixing ratios of 32:1 are required.
- Best ValuePennzoil Marine XLF 2-Cycle OilSummarySummaryAvailable in a number of different packs and sizes, this Pennzoil two-stroke oil is our best value pick.ProsProsEasy mixing, blue dye for optimal detection, and increased detergency. Suitable for a wide range of premix systems. Makes for a great low-scuff oil.ConsConsDesigned for boat engines, making it more suited to those kinds of applications.
- Honorable MentionRed Line 2-Stroke Race OilSummarySummaryGreat stability and awesome performance make this oil deserving of an honorable mention.ProsProsHigh temp stability, clean burning, reduces scuffing and buildup. Dyno with proven gains of up to 5 percent. Suitable for a wide range of motors.ConsConsThe price point is a little high when compared to competing brands and products.
Why Trust Us
All of our reviews are based on market research, expert input, and practical experience with each product we include. This way, we offer genuine, accurate guides to help you find the best picks.
Benefits of Two-Stroke Oil
- Clean engine. As oil flows through your engine, it picks up dirt, grime, and other particles, which has the potential to sludge up the entire thing. That leads to more maintenance costs and a big hassle. As a preventive measure, replace your oil regularly.
- Better gas mileage. Dirt bikes and motorcycles already have pretty good gas mileage to begin with, but it can usually still be improved by keeping your engine in tip-top shape. Changing your oil regularly will keep the engine running smoothly, helping to keep your gas mileage up.
This Houston, Texas-based company has been around since 1913, creating innovative formulations for all your motor needs. As an international company, Pennzoil is one of the market leaders in manufacturing motor oil, gear oil, and transmission fluid. One of the most popular products is the Marine XLF Engine Oil.
A company that manufactures only synthetic motor oils, Royal Purple makes a variety of performance products to help your bike’s engine run smoothly. Based in Porter, Texas, the company’s specialty products include high-quality two-stroke oils. The best seller in the lineup is the HP 2-Cycle High Performance Oil.
Based in sunny California, Red Line makes exclusively synthetic oil products that are designed for cars and motorcycles alike. Its philosophy is to keep your engine running smoothly and performing optimally through the use of its quality products. Check out the 2-Stroke Race Oil.
Two-Stroke Oil Pricing
- Under $15: We suggest being a little wary of motor oils at this price point. Although you can find a couple of decent options, you’re running the risk of ending up with a substandard product that might do your engine more harm than good.
- $15-$35: At this price point, you’ll find a variety of good to really good motor oils, from a variety of brands. Packaging sizes range from small quart bottles to bigger gallon jugs, so you’re getting plenty for the money.
- Over $35: If you’re looking for the highest-quality performance oils, this is the price range you’ll be shopping in. It’s worth the investment to keep your sports bike running smoothly, as most products at this price will be extremely effective at doing their job.
Synthetic vs. Natural
Most two-stroke oils are available in synthetic and natural forms. Synthetics make up slightly more of the market, as they tend to work better, making them overall more popular. Their improved resistance to heat, cold, shear, and oxidation has led many manufacturers to discontinue organic-based compounds.
If you’re looking for high quality, you’ll want your oil to carry an ISO-I-EGD or Jaso FD certification. Cheaper oils tend to be certified to API-TC standards, but you’ll want something a little bit better than the basics. That’ll keep your engine running at peak power, protecting it from damage and keeping it clean.
- Bottle Size: Although motor oil doesn’t “go bad” in the traditional sense once the cap is cracked open, you want to avoid buying significantly more than you need. Not only is it more money, but you run the risk of accidentally getting dirt or grime mixed in with the un-used oil that’s going to be sitting on your shelf. It’s better to use a fresh bottle every oil change.
- Multi-Pack Options: Some brands of two-stroke oil are available in multi-packs of small bottles. This is a great option to save money in the long run, especially if you’re looking to do your own oil changes.
- Use Case: Whether you’re using two-stroke oil for a motorcycle engine, a boat, or a chainsaw makes a difference. Be sure to check that you’re buying the proper viscosity for your motor and that the oil is OEM approved.
- Additives: Anti-corrosion additives in your two-cycle oil work to keep the inside of your engine rust free. If you want to make use of this feature, look for engine oils that contain these additives.
- Stabilizers: A slightly different type of additive, some two-stroke oils contain fuel stabilizers. This keeps the gasoline and oil mixture stable, improving its longevity.
Best Two-Stroke Oil Reviews & Recommendations 2019
Best Overall: Lucas Oil Semi-Synthetic 2-Cycle Oil
Available in a wide variety of sizes, this semi-synthetic two-cycle oil features smokeless clean burning and low ash production. That makes it among the most environmentally-friendly motor oils out there, which is especially suited to marine craft engines. The formulation mixes well with gasoline at all temperatures, making its use a breeze.
As a high-quality motor oil, this product meets ISO GD and JASO FC and FD standards, as well as exceeding API TC standards. It’s suitable for use in air-cooled engines and is specially designed to prevent carbon deposits on piston rings, skirts, crowns, and under-crown areas. This oil is best suited for oil injection systems where no fuel/oil premixing is required but will also work in premixes of gasoline and oil up to 50:1.
Although overall a great choice for bikes and boats, it’s not the best option for yard tools that prefer a mixing ratio of 32:1. The formulation has a tendency to dry out in this use case, making it a less-than-ideal option if you’re searching for something to lubricate your power tool engine.
Best Value: Pennzoil Marine XLF 2-Cycle Oil
Available as a single gallon or in a multipack of three, this Pennzoil 2-cycle oil is our best value pick. The XLF formulation mixes easily with gasoline and is dyed blue for easy detection. It can be used in a variety of mix ratios, making it suitable for a wide range of premix systems. The additives in the oil give it increased detergency over TC-W3 formulations, providing supreme protection against piston scuffing.
It also keeps performance-robbing carbon deposits from forming in the combustion chamber, piston tops, under crowns, and on piston-combustion rings. The synthetic blend is low smoke and reduces overall oil consumption. Because of its synthetic base, it also lasts longer than other formulations, saving you even more money in the long run.
The formulation works well in a wide variety of use cases. However, keep in mind that it is originally formulated for the specs of a boat engine. That makes it a very high-performance blend that might not work quite so well in smaller engines (think RC airplane). Keeping that in mind, this is a great oil that comes at an even better price.
Honorable Mention: Red Line 2-Stroke Race Oil
Red Line’s two-stroke racing oil has a couple of features that make it deserving of the honorable mention status. Its high-temperature stability is particularly useful, preventing deposits of carbon on combustion chambers, exhaust ports, rings, and crowns. The special high-performance formulation has proven gains of 3 to 5 percent and more power over longer runs, making it ideally suited to racing applications.
The formulation is also extremely clean burning and can be used at a mixing ratio of up to 100:1 (although a 50:1 ratio is suggested). It’s one of the smoothest running oils out there, reducing smoking and scuffing better than many competitors. That also makes it suitable for RC airplane engines and other similar applications. In the long run, it will also help preserve your spark plugs, saving you money on replacement costs.
The only downside we discovered is the higher price point. Because it is such a high-quality oil, it does sell for quite a bit more than other options. However, you really do get what you paid for, and this two-stroke oil is worth the investment.
- Follow the manufacturer's recommended fuel/oil mixture ratio when premixing the oil into the gas.
- When premixing the oil, measure the ratio carefully into a bottle or can. Shake well before adding the premix into the tank.
Q: Is two-stroke oil the same as two-cycle oil?
A: Yes, two-stroke oil can be found under a couple of different names, including two-cycle oil, 2-T oil, and two-stroke oil. A product with any of these names is suitable for use in a two-stroke engine.
Q: Can I get away without using oil in my two-stroke engine?
A: It can be tempting to think that the smaller size of two-stroke engines and their low oil concentration means that the engine can run without oil. That’s just not the case. As it is an engine with lots of moving parts, oil is a basic requirement for it to function properly.
Our top pick for the best two-stroke oil is the Lucas Oil Semi-Synthetic 2-Cycle Oil. It comes in a wide range of different sizes and works well in a number of different two-stroke engines.
If you’re looking for our best value pick, check out the Pennzoil Marine XLF 2-Cycle Oil. It features a smooth formulation that works especially well in boat engines.