Best Engine Oils for RV

Best Engine Oils for RV

Using the proper RV engine oil has plenty of benefits. A high-quality motorhome lubricant promotes the smooth and quieter running of the engine, keeps the system cool, removes debris and particles, and improves fuel efficiency. Additionally, it boosts performance, minimizes emissions, and extends your engine’s life.

Now, if you just bought a new motorhome, figuring out what type of motor oil to add to your RV engine can be quite tricky. With so many brands, viscosities, and types, where should you begin your search? Below, we have rounded up 5 of the best RV engine oils.

Also Read: Common Reasons Why Your RV Battery Keeps Dying?


Shell Rotella T4 15W-40 Conventional Diesel Engine Oil


One of the best RV engine oils is the Shell Rotella T4 15W-40. Made for diesel engines, this conventional oil protects your engine components against wear, deposits, and oil breakdown. It uses triple protection technology to safeguard your engine even under the most severe conditions. It’s perfect for modern low-emission and older diesel engines.

According to tests, it delivers an average of 50% more wear protection than required. On top of that, it helps maintain fuel economy and control exhaust-gas emissions. You can rely on it to provide outstanding protection, ultimately increasing the lifespan of your motor.

Mobil 1 Extended Performance High Mileage Full Synthetic Motor Oil 5W-30, 5 Quart


Mobil 1 Extended Performance is another well-known engine oil for motorhomes. It’s a synthetic oil meaning it consists of artificially made chemical compounds. This product is engineered to protect all critical parts of your engine for up to 20,000 miles under optimal driving conditions.

Use it consistently, and it can help extend the life of your rig by more than 75,000 miles. Apart from protection, it also cleans up your engine, shields against leaks, and delivers a quick-cold weather start. If you own a Class B or van, this is your go-to option.

Delo 400 SDE SAE 15W-40 Heavy Duty Diesel Engine Oil


Formulated to deliver longer oil life, improved wear protection, and extended engine life, Delo 400 15/40 is a great option for your new model motorhome. This heavy-duty lubricant is specifically aimed at 2017 greenhouse gas compliant diesel engines.

However, it’s also compatible with older models and gas engines. It will protect your hard-working engine against wear and corrosion and will work in a wide range of climate conditions. Furthermore, it will lower your maintenance and operating expenses.

Valvoline High Mileage Synthetic Blend


If you’re searching for an RV engine oil that will maximize your motorhome’s engine life, Valvoline High Mileage Synthetic Blend is a solid option. It’s designed to extend the life of motors that have over 75, 000 miles by coating worn-out moving parts.

This lubricant is a combination of synthetic and premium conventional oil, and it will shield your motor against wear, friction, and extreme temperatures. It also fights against sludge, debris buildup, corrosion, and rust.

AMSOIL Signature Series Max-Duty Synthetic Diesel Oils


If you’re shopping for synthetic engine oil for your motorhome, consider the AMSOIL Max-Duty. According to the manufacturer, the oil provides six times more engine protection, lowers oil consumption, performs well in cold-temperature, and extends drain intervals.

The oil comes in various viscosities, from 5W-30, 0W-40, 5W-40 to 15W-40. Whether you have a heavy-duty Class A or lighter campervan, this oil can withstand any demands you place on the engine.

Extend the Lifespan of Your RV’s Engine with the Right Oil

When exploring, RVs are subjected to extreme stresses and harsh temperatures. To keep the engine performing optimally and prolong its life, you need the right oil. If you’re wondering what are some of the best engine oils for your motorhome, you can’t go wrong with any of the options above.

Also Read: Shopping for a New RV