3 Best Engine Oil For Royal Enfield Classic 350

Over the years, Royal Enfield has gained popularity across the globe. Today, the brand has its reach in many countries. No matter how many models the brand launch, Royal Enfield Classic 350 remains the most popular. Royal Enfield has updated Classic 350 over time. The design of the Classic 350 is still inspired by the very first Royal Enfield Classic. This timeless design still features a teardrop fuel tank, and it also has its distinctive headlamp as well as a thump. The new Class 350 features a BS-VI J-Series engine and Dual Channel ABS Brakes.

The instrument cluster of RE Classic 350 has been updated to accommodate a functional LCD screen. The engine of Classic 350 generates 20.2 BHP of massive torque. The new J series engines are very reliable, and they are also mile munchers. It is still one of the favourites for the Leh-Ladakh Bike trip. Talking about maintenance, it doesn’t require a lot of effort to maintain your RE Classic 350. If you look at the service manual, you will realize that you only need to change the engine oil & engine oil filter every 10,000 Km. This brings us to the point that engine oil is the most important component of your Royal Enfield. So, which engine oil should you use in RE Classic 350? Scroll down to find out more about the same.

Royal Enfield Classic 350:Engine Oil Grade

Most Royal Enfield bikes with 350cc engines are equipped with 4 Stroke Air-Oil Cooled J-Series Engines. These engines require the same grade of engine oil. However, checking the user manual before refilling the engine oil is better. The engine oil grade required in Royal Enfield Classic 350 is SAE 15W 50 API SL Grade JASO MA2 Semi Synthetic. The brand recommends the usage of Semi-Synthetic engine oil, but you can also use the same grade of synthetic engine oil as it is better than the semi-synthetic oil. In addition, JASO MA2 means that the engine oil is suitable for bikes with catalytic converters in the exhaust system.

Engine Oil Capacity of Royal Enfield Classic 350

The engine oil capacity of the Royal Enfield Classic 350 is 2.2 L; however, this is the capacity of the dry fill. That means when the engine is manufactured or when the engine is rebuilt; it requires 2.2 L of engine oil. You need approximately 1.7 L of engine oil when carrying out the maintenance oil change. The actual engine oil packaging may be more, so you must carefully measure the engine oil before you pour it in. You may overfill the engine oil if you use all 2L in the pack. This may lead to reduced performance or issues with the engine of your Classic 350.

Top 3 Engine Oil for Royal Enfield Classic 350

By now, you know what grade of engine oil should be used for Royal Enfield Classic 350. The next big question is which engine oil you should buy. This section lists the top three engine oils you can use for RE Classic 350.

1. Motul 5100 4T Hybrid 15W-50 API Semi-Synthetic Engine Oil

Motul 5100 4T Hybrid 15W-50 API Semi-Synthetic Engine Oil

Buy at Amazon

If you ask any bike enthusiast about the best engine oil for their bikes, they will call out Motul. It has superior quality and keeps your Classic 350’s engine in proper shape. Motul engine oil maintains viscosity even at high temperatures, and hence it reduces the wear & tear of the engine. Motual 5100 works perfectly fine with the wet clutch and catalytic converters. Once you start using the Motul engine oil in your RE Classic 350, you will notice a sudden performance improvement. We recommend carrying out an engine flush before you use this engine oil for the first time.


  • Reduced engine friction & improved performance.
  • Resistant to high temperature
  • Designed for bikes with catalytic converter
  • Improved mileage& performance.


  • Slightly more expensive than other options.

2. Shell Advance 4T AX7 15W-50 API SM Synthetic Engine Oil

Shell Advance 4T AX7 15W-50 API SM Synthetic Engine Oil

Buy at Amazon

The mechanic often recommends an engine flush on your RE Classic 350 if you ride in city traffic. This is to remove the accumulated carbon. However, if you use Shell Advance 4T engine oil, you will not need the engine flush. This engine oil prevents the build-up of carbon in your Classic 350 and it keeps the engine clean. You will get better mileage, stronger acceleration, and prolonged engine life. This engine oil is the best choice if you are looking for an economical engine oil that protects your engine during city traffic and offers optimal performance while cruising on empty highways.


  • Prevents carbon accumulation in the engine.
  • You get better fuel economy.
  • JASO MA2 compliant.
  • Delivers good results even in stressful riding conditions.


  • The brand recommends shorter change intervals.

 3. Castrol POWER1 CRUISE 15W-50 4T Synthetic Engine Oil

Castrol POWER1 CRUISE 15W-50 4T Synthetic Engine Oil

Buy at Amazon

At number 3, we have engine oil for Castrol. This is a synthetic engine oil for your Royal Enfield Classic 350. Synthetic engine oils are considered to be the most superior engine oils. However, we have it on number 3 because of the shorter service intervals. You may experience minor levels of oil burn when you use this engine oil. This is the expected behaviour, but this also makes you check the engine oil levels after every 2000 Km. Overall, the Castrol engine oil works well with all Royal Enfield bikes, and it is perfect for the engine that gets superheated during cruising trips.


  • Considered to be best because of its synthetic grade.
  • Resistant to high temperatures.
  • Improved performance during long rides.
  • Available at an affordable price.


  • Need to inspect oil levels frequently.

Explore Other Royal Enfield Models as well 

Best Engine Oil For Royal Enfield Hunter 350 Engine Oil For Royal Enfield Himalayan Dune


Royal Enfield Classic 350 have one of the most resilient engines. It can take up a lot of abuse. With the introduction of BS VI, the engine oil change interval has been increased to 10,000 Km. However, you should still inspect and refill the engine oil every 5000 Km. Some people prefer inspective after 1000 Kms. All of these things depend on your ride pattern and the environment. While you are changing the engine oil, remember to change the oil filter. Using only RE Genuine products while carrying out regular maintenance or repairs is advisable. In addition, you must also clean the air filter because a clogged air filter can reduce performance by a great degree.

Leave a Comment