We are unable to answer this question as you do not state the engine size of the car or if it is petrol/diesel or the model of the car.
For more information refer to the vehicles handbook or visit a Halfords store (or provide us more details)

For a VW Golf (post 2000) on a variable service, the Vehicle Manufacturers
Recommended Oil Viscosity is a 5w-30 fully synthetic oil (VWG 503.00/504.00)

Halfords 5W40 Fully Synthetic meets BMW LL 98.
If this is not suitable then you might want to consider Halfords 5W30 BMW/MB Fully Synthetic which meets the latest BMW LL 04 specification.

We recommend a 5w-30 part synthetic oil

Halfords 5W40 fully synthetic meets the requirements of MB 229.3 as does Mobil 1 0W40. Oils of these type are compatible in the sense that they will mix without a problem but please remember that one is a 5W while the other is a 0W which will have slightly better performance when the oil is really cold. Yes Halfords oil is supplied by a subsidiary of Exxon Mobil.

This, like almost every 5Wxx oil on the market at present is based on hydrocracked base stock. PAO is only needed for extreme low temperature work (below -35 deg C) and hydrocracked stocks are capable of meeting the highest levels of current industry and OEM performance.

No, Ford's of this age prefer the use of a 5W30 meeting a Ford "913A" or "913B" specification. The correct product would be Halfords Part Synthetic 5W30 (172304-0) which carries this spec.

If this is the 2007+ model then the manufacturer's main recommendation is to use a 5W40 oil meeting ACEA C3. However these are very rare as most C3 oils are 5W30's. I believe if you look in your owner's manual it will say that a 5W30 can be used and then the best choice would be Halfords 5W30 BMW/MB Fully Synthetic Oil (924423-0 or 924324-0). Don't be put off by the reference to BMW and MB, this product is ACEA C3 and is suitable for a wide range of cars.

"Yes Halfords oil is supplied by a subsidiary of Exxon Mobil." However this does not mean it is supplied by mobil or advertised under the mobil label.

ACEA and API specifications are available on the back label of the packs and Halfords Fully Synthetic 5W40 meets ACEA A3 B3 B4 and API SL CF.

We are constantly striving to improve the quality and detail of our products on Halfords.com. Thankyou for your suggestion and we will look into adding this information to our descriptions.