{"product_id":"castrol-gtx-15w-40-ultraclean-4l","title":"Castrol GTX 15W-40 Ultraclean 4L","description":"\u003cp\u003eCastrol GTX 15W-40 Ultraclean comes in a 4L container for petrol and diesel cars. If your handbook asks for 15W-40, this GTX oil is a familiar choice for top ups and oil changes, particularly in older engines that use this grade.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e15W-40 viscosity\u003c\/li\u003e\n\u003cli\u003eUltraclean\u003c\/li\u003e\n\u003cli\u003e4L container\u003c\/li\u003e\n\u003cli\u003eFor petrol and diesel cars\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eCastrol\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct\u003c\/td\u003e\n\u003ctd\u003eGTX Ultraclean\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrade\u003c\/td\u003e\n\u003ctd\u003e15W-40\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e4L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eChecking the level\u003c\/h3\u003e\u003col\u003e\n\u003cli\u003ePark on flat ground.\u003c\/li\u003e\n\u003cli\u003eWait for the engine to cool.\u003c\/li\u003e\n\u003cli\u003eCheck the dipstick and top up slowly if low.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eFAQs\u003c\/h3\u003e\u003ch4\u003eIs 15W-40 right for my car?\u003c\/h4\u003e\u003cp\u003eCheck the handbook for the grade and specification required.\u003c\/p\u003e","brand":"Castrol","offers":[{"title":"Default Title","offer_id":67824353673489,"sku":"DS-9051844","price":42.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/7323\/0097\/files\/castrol-gtx-15w-40-ultraclean-4l-1.jpg?v=1792513766","url":"https:\/\/diysmith.co.uk\/products\/castrol-gtx-15w-40-ultraclean-4l","provider":"DIYSmith","version":"1.0","type":"link"}