Mobil Super™ 1000 20W-50 — Premium Conventional Motor Oil

Why 20W-50? The Right Grade for Older & High-Mileage Engines

20W-50 is a higher-viscosity grade than the more common 15W-40 — making it the correct specification for older engines with wider manufacturing tolerances, engines that have seen high mileage, and vehicles operating in consistently warm to hot ambient conditions. The thicker oil film provides better sealing between piston rings and cylinder walls in worn engines, helps reduce oil consumption, and delivers robust protection in high-temperature operating environments typical of South African summers and hot climate driving. If your vehicle specifies or benefits from a 20W-50, this is the correct Mobil product.

20W-50

SAE Grade

API SL

Specification

240°C

Flash Point

-27°C

Pour Point

124

Viscosity Index

Conv.

Formulation

Extended Wear & Deposit Protection

Advanced additive system provides extended protection against engine wear and deposit formation — maintaining engine cleanliness and component integrity across the full service interval in older petrol engines under normal daily operating conditions.

Start-Up Protection

Provides engine protection during start-up — the period of highest wear risk. The 20W cold-start viscosity ensures adequate oil film formation at start-up in ambient temperatures typical of South African conditions, protecting engine surfaces before full oil pressure is established.

Sludge Control

Helps combat sludge formation — keeping oil passages and engine internals clean throughout the service interval. Particularly important for older engines used in city driving and short-trip conditions where sludge accumulation is accelerated.

High-Temperature Stability

Flash Point of 240°C and HTHS viscosity of 4.7 mPa.s at 150°C confirm robust oil film integrity at the extreme temperatures found in pistons, bearings and turbocharger shafts — providing reliable protection in hot ambient conditions and sustained high-load driving.

Better Sealing for Worn Engines

The higher 20W-50 viscosity provides a thicker oil film that better fills the wider clearances found in older and high-mileage engines — helping to reduce oil consumption, improve compression sealing and extend engine service life in vehicles that have covered significant mileage.

Wide Temperature Suitability

Formulated for use across a wide range of temperature conditions — Pour Point of -27°C provides adequate cold-start performance in South African winter conditions, while the robust high-temperature viscosity retention covers the full range of warm-climate operating environments.

Older Petrol Engines

The primary application — older petrol engines with wider manufacturing tolerances where a 20W-50 grade is specified or recommended. Common in South African vehicles from the 1980s through early 2000s where engine design predates modern low-viscosity specifications.

High-Mileage Vehicles

Passenger cars, SUVs, light trucks and vans with high mileage where increased engine clearances benefit from the thicker oil film of a 20W-50 — helping to reduce oil consumption and maintain compression in engines that have seen extensive use.

Hot Climate Operation

Vehicles operating in consistently warm to hot ambient conditions — South African summers, Northern Cape and Karoo environments, or any application where sustained high ambient temperatures make a higher-viscosity oil the appropriate specification.

Taxi & High-Usage Fleets

Taxi and minibus fleets running older petrol engines in sustained daily operation where a cost-effective, trusted conventional oil maintaining Mobil's global quality standards delivers reliable protection across high daily mileage accumulation.

Normal Daily Driving

Passenger vehicles used for highway cruising and normal operating conditions where 20W-50 is the manufacturer-specified or appropriate viscosity grade — delivering trusted Mobil protection for everyday drivers at an accessible price point.

Not Suitable For

Modern engines specifying low-viscosity oils (0W-20, 5W-30, 5W-40). Engines with Diesel Particulate Filters (DPF). Diesel engines — this product is for petrol engines requiring API SL. Always consult your owner's manual before use.

API

SL