About Castrol 10w40 GTX Semi Synthetic Engine Oil:
Heavy traffic, poor fuel quality, harsh weather and exceeding oil change intervals can be tough on your engine. These driving conditions can all cause the build-up of a thick, tar-like substance, inside your engine, called sludge. If untreated, it can rob an engine of power and fuel economy. Ultimately it can cause engine failure.
Castrol GTX is specially engineered to prevent the harmful build-up of sludge. It reduces oil deposits and provides daily protection for your engine and provides 25% better protection against sludge than the latest industry standard.
When to Change your oil:
Experts recommend you change your oil every 3000 miles but it can vary quite a lot from car to car. Check your owner’s manual to see what the manufacturer recommends for your car.
It’s a good idea to check your oil level regularly as it’s common for cars (even brand new ones) to burn some oil in-between services. To avoid paying high garage forecourt prices it's a good idea to keep a 1 litre top-up in your boot.
Does Castrol GTX 10w40 suit your car?
Using the engine oil finder is the quickest way to ensure you get the right oil for your car. If you are unsure which engine oil you need, click here to use the oil finder. Bear in mind that more than one grade might be recommended.
For example, 5w30 engine oil and 10w40 engine oil might be suitable for your car. The oil finder system also tells you how much oil your car needs and how often you need to change it.
Alternatively, you can check your owner’s manual to see the oil specifications required for your car. Here are the specifications for Castrol GTX 10w40
APPROVALS & SPECIFICATIONS
ACEA A3/B4
API SL/CF
MB-Approval 229.1
VW 501 01
If the specification in your owner’s manual matches any of the specifications above then this oil is suitable for use in your engine.