5W-20 conventional oil consists of refined crude oil and several additives. It provides adequate performance at normal operating temperature and is suitable for engine protection and lubrication. 5W-20 synthetic motor oil comprises synthetic base oil (refined and modified hydrocarbon atoms) and additives.

Mobil Special™ motor oils are formulated from quality base stocks combined with modern performance additives to provide the engine protection and performance you expect under a wide variety of operating conditions. Mobil Special motor oils come with the Mobil Limited Warranty*.

Mobil Special™ Oils are formulated from high quality base stocks combined with modern performance additives to give your engine the protection and the performance you expect under a wide variety of operating conditions. Additionally, Mobil Special 5W-20, 5W-30* and 10W-30* are synthetic blend motor oils.

Mobil 1 synthetic oils are developed from a proprietary blend of high-quality base oils. Conventional oils are made from a different blend of less refined base oils.

What's the best 5W-20 oil?

• Castrol EDGE, an advanced full synthetic 5W-20 motor oil, is Castrol's strongest oil and a great option for those who want the very best for their car.
• Castrol GTX FULL SYNTHETIC is a premium full synthetic 5W-20 that offers superior wear protection.

5W-20 (with a slightly higher viscosity level) is more versatile in oil types as it is also available as conventional oil. However, you'll notice clear differences between the conventional and synthetic variants of this oil. 5W-20 synthetic motor oil is far better, with improved fuel efficiency and oil change interval.

What's the best 5W-20 oil?

• Castrol EDGE, an advanced full synthetic 5W-20 motor oil, is Castrol's strongest oil and a great option for those who want the very best for their car.
• Castrol GTX FULL SYNTHETIC is a premium full synthetic 5W-20 that offers superior wear protection.

What's the best 5W-20 oil?

• Castrol EDGE, an advanced full synthetic 5W-20 motor oil, is Castrol's strongest oil and a great option for those who want the very best for their car.
• Castrol GTX FULL SYNTHETIC is a premium full synthetic 5W-20 that offers superior wear protection.

Keeps engines running like new Hit the road with peace of mind knowing you are using an advanced full synthetic motor oil that protects for 10,000 miles between oil changes, guaranteed1. It's our #1 selling motor oil at U.S. retail2 for a reason.

Mobil Full Synthetic 0W-20 motor oil is formulated for vehicles that require a full synthetic motor oil and vehicles that are upgrading from conventional and synthetic blend oils. Mobil Full Synthetic 0W-20 motor oil meets or exceeds the latest industry requirements for gasoline-powered: Cars. Trucks.

Mobil 1 synthetic oils are developed from a proprietary blend of high-quality base oils. Conventional oils are made from a different blend of less refined base oils.

10,000 miles Advanced full synthetic formula Go 10,000 miles between oil changes. Helps extend engine life, even in severe conditions. 10x better high temperature protection.

10,000 miles This advanced full synthetic motor oil works to prevent leaks and protect engines, all while going 10,000 miles between oil changes1.