{"product_id":"castrol-gtx-diesel-15w-40-engine-oil-1-lts","title":"Castrol Gtx Diesel 15W-40 Engine Oil 1 Lts","description":"Castrol 15W40 Gtx Diesel Engine Oil — 1 Lts\r\n\r\nCastrol GTX Diesel with Sludge Protection Technology formulated specifically for diesel passenger cars. Engineered for diesel passenger cars needing reliable mineral-based protection.\r\n\r\nViscosity \u0026amp; Temperature: The 15W40 multigrade rating means this oil flows at -20°C, well-suited for tropical and sub-tropical climates and provides a robust SAE 40 viscosity film at 100°C engine temperatures. The higher 15W cold-pour rating is no disadvantage in India's warm climate — the thick SAE 40 film at operating temperature delivers superior protection for diesel and heavy-duty engines under sustained load. Perfectly suited to India's diverse climate — from cold Himalayan mornings to peak-summer plains temperatures exceeding 45°C.\r\n\r\nUnderstanding 15W40: The first number (15W) 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 1 Lts pack is ideal for a partial refill or top-up for diesel engines, commercial vehicles, trucks, tractors, and high-mileage cars. 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":45911302963434,"sku":null,"price":0.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0708\/3186\/6090\/files\/Castrol_Gtx_Diesel_15W40_1_Lts.png?v=1773898674","url":"https:\/\/www.ajmeratyres.com\/products\/castrol-gtx-diesel-15w-40-engine-oil-1-lts","provider":"ajmeratyres","version":"1.0","type":"link"}