Does your car need a synthetic blend engine oil? Somewhere between conventional and full synthetics, they’re a popular and economical choice.
What is part synthetic oil? Also known as Semi Synthetic or Synthetic Blend engine oil, these motor oils provide a balance between the economy offered by conventional oil and the superior performance of full synthetic oil.
Among the leading part synthetic oils you can choose between are Castrol® GTX® Ultraclean, which provides superior protection against the build-up of sludge, and Castrol® GTX® High Mileage, which is engineered for vehicles with over 75,000 miles on the odometer, but that don't require a full synthetic.
Castrol MAGNATEC 10W-40 is a part synthetic lubricant suitable for use in petrol cars where the manufacturer recommends API SN or earlier specification 10W-40 lubricant
Castrol MAGNATEC DIESEL 15W-40 is a part synthetic lubricant suitable for use in diesel cars where the manufacturer recommends API SN, ACEA A3/B4 or earlier specification 15W-40 lubricant
Castrol GTX is one of the world’s most trusted engine oils. The modern world creates difficult challenges for engines.