{"product_id":"castrol-magnetec-magnetec-10w-40-engine-oil-4-lts","title":"Castrol Magnetec Magnetec 10W-40 Engine Oil 4 Lts","description":"Castrol 10w40 Magnetec Magnetec Engine Oil — 4 Lts\r\n\r\nCastrol Magnatec with intelligent molecules that cling to engine surfaces and refuse to drain away — providing protection from the moment the engine starts. Engineered for petrol and diesel passenger cars requiring all-day engine protection.\r\n\r\nViscosity \u0026amp; Temperature: The 10w40 multigrade rating means this oil maintains pumpability from -25°C and provides a heavier SAE 40 film at 100°C for more demanding engines. The SAE 40 high-temperature rating makes it ideal for older or high-mileage engines that benefit from a thicker oil film to compensate for increased internal clearances. Perfectly suited to India's diverse climate — from cold Himalayan mornings to peak-summer plains temperatures exceeding 45°C.\r\n\r\nUnderstanding 10w40: The first number (10W) is the Winter cold-flow rating — lower means better oil flow at cold start, protecting your engine in the critical first seconds after ignition. The second number (40) is the high-temperature viscosity at 100°C — higher means a thicker, stronger protective film under heat and load.\r\n\r\nPack size: The 4 Lts pack covers a complete engine oil change for most older petrol and diesel engines, motorcycles, and high-mileage vehicles. Change oil at your manufacturer's recommended interval — typically every 5,000–10,000 km — to maximise engine life and fuel efficiency.","brand":"ajmeratyres","offers":[{"title":"Default Title","offer_id":45911314137322,"sku":null,"price":0.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0708\/3186\/6090\/files\/Castrol_Magnetec_Magnetec_10w40_4_Lts.png?v=1773898724","url":"https:\/\/www.ajmeratyres.com\/products\/castrol-magnetec-magnetec-10w-40-engine-oil-4-lts","provider":"ajmeratyres","version":"1.0","type":"link"}