What are the advantages of synthetic oils?
Synthetics and semi synthetics give improved performance at high temperatures and support extended drain intervals. They are generally the preferred choice for high perfomance cars or for motorists who particularly value long life/durability. Your vehicle handbook should specify the grade/type of oil to be used based on the results of extensive durability / extreme environment testing by the manufacturer. If synthetic oils are recommended then that is what you should use. We don’t recommended mixing mineral and synthetics, nor do we recommend switching to synthetic oils unless the vehicle handbook specifies that you may do so. If the manufacturer has confirmed that synthetic oil is suitable for your vehicle and you intend to switch then you must make sure that the engine is drained fully of mineral oil first.
