Below you will find the best synthetic oil for a 2018 Rieju Marathon SM 125. Maximize your vehicle's potential with 100% full synthetic oil that is made in the USA! For more than the past 50 years, AMSOIL has perfected the art of maximizing efficiency and engine life. The advanced synthetic formulas deliver superior protection from heat, friction, and wear, keeping engines as good as new for miles. Upgrade to AMSOIL today and experience better performance, reliability, and reduced oil consumption. Click add to cart for more details. Sign up as a preferred customer and get discounts and more! The oil type, capacity and oil filter (if available) are listed below and verified for accuracy. Upgrade now!
Recommended transmission fluids for my 2018 Marathon Sm 125
| Product Name | Note | Capacities | Product Description | Product |
|---|---|---|---|---|
| 10W-40 Synthetic Dirt Bike Oil | Engine/Transmission |
This oil is formulated to give top performance needed by on and off-track dirt bike enthusiasts. Riders can have peace of mind that the clutch will perform from start to finish. Our advanced formulation will give you engine reliability and worry-free operation under the harshest conditions! This is the best synthetic oil for your 2018 Rieju Marathon Sm 125 and it is made in the USA. |
DB40QT-EA
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Recommended coolants for my Rieju Marathon Sm 125
| Product Name | Product Description | Capacities | Product |
|---|---|---|---|
| Low Toxicity Antifreeze and Engine Coolant | Lasts in your 2018 Rieju Marathon Sm 125 for up to 150,000 miles or five years! (whichever comes first). Biodegradable! |
ANT1G-EA
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| Passenger Car & Light Truck Antifreeze & Coolant | maximum protection for your 2018 Rieju Marathon Sm 125 under extreme temperatures and operating conditions! Lasts up to 150,000 miles or five years! (whichever comes first) |
ANTPC1G-EA
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Synthetic engine oils keep your engine cool and clean, decreasing friction with low viscosity lubricants and detergents and antioxidants to keep gunk and corrosion at bay. Check out this testimonial by Tim on July 13, 2023. "My FLHTCU now has 72000 miles on it. From the first 600-mile oil change, this is the only oil I have used. My oil is changed every 5000 miles. Every time I change the oil, I submit a sample for analysis. Each time, it comes back clean. At my last full service, I did a cylinder leak-down test, and the results returned 5%. Outstanding for an air-cooled engine at 70000 miles! Best oil on the market."


