Best Four-Stroke Engine Oil of 2026

The STP Small Engine Oil is a synthetic blend designed for small engines like lawnmowers, tractors, and generators. Its SAE 10W-30 formula works well in all seasons, making it easier for you to start your equipment no matter the weather. The oil contains antioxidants that protect it from breaking down under high temperatures, so it stays effective longer. Additionally, it features anti-wear technology to help reduce engine wear and a viscosity booster that lowers oil consumption. This means your engine gets reliable protection and smooth performance through a wide range of temperatures, helping your equipment last longer and run better.

John Deere Turf-Gard Oil is a high-quality 4-cycle engine oil specifically designed for gas engines. With its SAE 10W-30 viscosity, it offers maximum protection for your lawn and utility equipment. This oil is perfect for keeping your machines running smoothly and efficiently. The 946mL / 32 fl. Oz per quart packaging provides you with two quarts of oil, ensuring you have enough to last for multiple maintenance sessions. With John Deere Turf-Gard Oil, you can trust that your equipment will be well-maintained and ready to tackle any task.

Valvoline High Mileage Motor Oil is a top-quality four-stroke engine oil designed specifically for older high mileage engines. With its Maxlife Plus Technology and Moly additive protection, this motor oil prevents engine breakdown and reduces oil consumption, prolonging the life of your engine. It features a multi-dimensional anti-wear system that fights surface friction, providing exceptional protection standards. The oil also includes seal conditioners that refresh aging seals and prevent leaks. Valvoline High Mileage Motor Oil meets or exceeds all requirements of ILSAC GF-6A, API SP, API SN with SN PLUS, API SN. Made and formulated in America, this motor oil maximizes your engine's life and improves its performance.

The VP Racing Synthetic Engine Oil offers excellent performance for your small engine by going beyond standard 10W-30 and SAE 30 oil requirements. This means your engine gets better protection and smoother operation. Its synthetic base helps cut down on how much oil you need to add, saving you time and money on maintenance. Plus, the oil is naturally biodegradable, so it’s safer for the environment when you change it. Designed to meet the specs of popular brands like Kawasaki, Honda, and Briggs & Stratton, this oil ensures your engine runs efficiently and reliably.

This licensed John Deere Turf-Gard engine oil offers maximum protection for your lawn and utility equipment. It is specifically designed for gas engines and 4-cycle engines only with SAE 10W-30. Each quart contains 946mL / 32 fl. oz of oil, and this 4-pack ensures that you always have enough oil on hand when you need it.

Valvoline Marine Engine Oil is designed to meet the demanding needs of 4-stroke marine engines. It offers enhanced wear protection, ensuring your engine remains safe even under extreme heat and high RPMs. With up to eight times better rust defense, this oil protects your engine from moisture exposure, whether it's in use or stored away. Its formulation is tailored specifically for marine motors, providing the durability and performance necessary in harsh conditions. This premium full synthetic oil gives you peace of mind, knowing your engine is well-protected and ready for action.

The TruFuel 2-Cycle Fuel comes pre-mixed in a 50:1 ratio, making it ready to use right out of the bottle. This means you don’t have to spend time measuring and mixing fuel yourself, which can save you effort and reduce mistakes. It’s designed specifically for outdoor equipment that requires 2-cycle fuel, so you can trust it to keep your tools running smoothly. The convenient 32-ounce bottles come in a 2-pack, giving you enough fuel to keep your equipment powered without frequent trips to the store.

The Briggs & Stratton Oil Kit is designed to make your engine maintenance simple and efficient. It includes three quarts of full synthetic 15W-50 oil, which helps keep your engine running smoothly and protected under various conditions. You also get a high-quality oil filter to ensure your engine stays clean and free from harmful debris. The kit comes with an oil absorbent pad that helps prevent spills, keeping your workspace clean and safe. Plus, this oil is made in the USA and meets Briggs & Stratton and Vanguard warranty standards, giving you peace of mind about its quality.

This 32 oz. bottle of Briggs & Stratton 100030C SAE 5W-30 4-Cycle Snow Thrower Oil is designed to keep your snow thrower engine running smoothly. The model number is 100030C and the item package dimensions are 8.8" x 4.2" x 2.4". This four-stroke engine oil is the perfect solution for your snow thrower needs.

This semi-synthetic 5W-30 4-stroke oil is designed for most 2-stage 4-stroke snow blowers. It provides superior cold temperature performance and exceeds API SJ specifications.