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Engine Oils

What does Viscocity mean?

Viscocity is a measurement of the thickness and 'ease of flow' in any liquid. For example, water is a thin liquid that flows freely, so we say that it has a low viscosity. Honey, on the other hand, is relatively thick and flows more slowly. So we describe honey as having a high viscosity. It's also worth noting that honey flows more easily - and is therefore less viscous - when it is slightly warm. Motor oil behaves in pretty much the same way, which is why mechanics will usually run an engine for a minute or two before draining used motor oil away to replace it.


There are so many motor oils out there, which one is right for your vehicle? Well, there are three basic types: mineral, part synthetic and full synthetic. Mineral oils are the least refined of the three, which means they cost less, but also provide less protection, performance and economy than the other options. Part synthetic motor oils are a blend of mineral oil and synthetic oil, to give added performance, but still at a lower cost than full synthetic motor oils. Full synthetics are the most expensive motor oils as they are highly refined, but offer the best and protection and economy to absolutely every vehicle.

GS Caltex Engine Oils

Choose GS Caltex choose the smart lubricant for your vehicle. Let your engines roar with consistency and smooth performance. It's time you make the superior choice!

API GL-4 SAE 80W-90

Kixx Geartec is a high quality, mild-EP automotive gear lubricant designed for applications where API GL-4 performance is required.

API GL-5 SAE 85W-140

Kixx Geartec is a premium quality extreme pressure type multi-grade automotive gear oil specifically designed to address the requirements of gears

The Right Oil For You