Castrol techncial support and FAQs for Independent Workshops.

Technical Support for Independent Workshops

FAQs for Independent Workshops

We have compiled some of the frequently asked questions we receive from Independent Workshops.


If your vehicle was made after 1995 - You can use the Castrol Oil Finder tool. By putting in your registration number, you can get information and recommendations on suitable Castrol oils for your vehicle**.


The Castrol Oil Finder tool also allows you to look up the Castrol oils for Motorcycles, Off Road and Commercial vehicles as well as Agricultural Machinery, by doing a vehicle search by make and model.


Click here to use the Castrol Oil Finder tool

**Where a suitable product is available.

All of our products on this website have links to the correct MSDS and PDS.

Also you can find Material Safety Data Sheets (MSDS) and Product Data


Sheets (PDS) for all of our products by using the Data Sheet Portal.

Click here to use the Data Sheet Portal

Castrol MAGNATEC STOP-START oils are suitable for vehicles both with and without the stop-start engine technology installed* and can be mixed safely with pervious MAGNATEC grades of the same viscosity and specification.


The “STOP-START” part of the Castrol MAGNATEC name doesn’t actually refer to the engine technology where the car stops and starts automatically to save fuel and reduce emissions. The MAGNATEC STOP-START  refers to the “type” of driving that many of us do during our daily commute.


Each time you drive to work or take your kids to school you have to stop at traffic lights or wait at junctions or in queues of slow moving traffic. All that idling in traffic causes damaging wear in your engine. Castrol MAGNATEC STOP-START specifically protects your engine in busy traffic conditions, offering 20%* more protection from damaging stop-start engine wear.


*Always refer to the handbook to ensure correct specification / viscosity oil is used.

We have recently changed some of the wording on the labels to meet wider marketing requirements throughout the world. The Castrol GTX product referred to as “ Synthetic Technology” is still a Part Synthetic product and can be used with previous versions of Castrol GTX.


We have also employed the Synthetic Technology on our Castrol MAGNATEC 10W-40 and that also is still a part synthetic product and can be used with the previous Castrol MAGNATEC 10W-40.