{"product_id":"sierra-10w-30-semi-synthetic-catalyst-marine-engine-oil-55-gallon-drum-mpn-18-9421cat-7","title":"Sierra 10W-30 Semi-Synthetic Catalyst Oil, 55 Gallon Drum, 18-9421CAT-7","description":"\u003cp\u003eSierra 18-9421CAT-7 is a semi-synthetic 10W-30 catalyst oil supplied in a bulk 55 gallon drum, formulated for use as a marine engine lubricant in high-volume service and fleet applications. The semi-synthetic base blend combines conventional and synthetic base stocks to deliver stable viscosity performance across a range of operating temperatures while helping protect internal engine components during extended run cycles. The 55 gallon drum format is intended for shops, marinas, and service operations that go through oil in volume and want to avoid the cost and waste of smaller individual containers. As a 10W-30 multi-viscosity oil, it is designed to flow readily at startup while maintaining a protective film at normal operating temperatures.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-9421CAT-7\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Catalyst Semi-Synthetic Oil\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eViscosity Grade:\u003c\/strong\u003e 10W-30\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOil Type:\u003c\/strong\u003e Semi-Synthetic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContainer Size:\u003c\/strong\u003e 55 Gallons\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282388522\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat viscosity is Sierra 18-9421CAT-7 oil?\u003c\/strong\u003e Sierra 18-9421CAT-7 is a 10W-30 multi-viscosity oil, formulated to flow well at startup and hold its protective film at normal operating temperature.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a synthetic or conventional oil?\u003c\/strong\u003e It is a semi-synthetic blend, combining conventional and synthetic base stocks in the Sierra 18-9421CAT-7 Catalyst oil.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat size container does 18-9421CAT-7 come in?\u003c\/strong\u003e Sierra 18-9421CAT-7 is packaged in a 55 gallon drum, intended for bulk or high-volume use rather than individual quart or gallon purchases.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWho is the 55 gallon drum size intended for?\u003c\/strong\u003e The 55 gallon drum format of Sierra 18-9421CAT-7 is intended for shops, marinas, and service operations that use enough oil to benefit from bulk purchasing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for Sierra 18-9421CAT-7?\u003c\/strong\u003e The UPC for the Sierra 18-9421CAT-7 Catalyst Semi-Synthetic 10W-30 oil is 808282388522.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes semi-synthetic oil perform differently than full synthetic?\u003c\/strong\u003e Semi-synthetic oil, like Sierra 18-9421CAT-7, blends conventional and synthetic base stocks, which typically offers improved performance over conventional oil at a different cost point than full synthetic formulations.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan 18-9421CAT-7 be purchased in smaller container sizes?\u003c\/strong\u003e The Sierra 18-9421CAT-7 part number as listed here refers specifically to the 55 gallon drum size.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does the 10W-30 rating mean for cold starts?\u003c\/strong\u003e The 10W in the 10W-30 rating on Sierra 18-9421CAT-7 indicates the oil's flow characteristics at lower temperatures, helping it circulate more readily during startup compared to a higher first-number oil.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs Sierra 18-9421CAT-7 sold by the individual quart?\u003c\/strong\u003e No, this listing is for the 55 gallon bulk drum of Sierra 18-9421CAT-7 Catalyst Semi-Synthetic 10W-30 oil, not individual quarts.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the brand of the Catalyst Semi-Synthetic 10W-30 oil?\u003c\/strong\u003e The Catalyst Semi-Synthetic 10W-30 oil in the 55 gallon drum is manufactured by Sierra under part number 18-9421CAT-7.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988436627675,"sku":"SIE-18-9421CAT-7","price":2092.21,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/sierra_lg_949__26559__16093.1772547083.500.750.jpg?v=1785329143","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-10w-30-semi-synthetic-catalyst-marine-engine-oil-55-gallon-drum-mpn-18-9421cat-7","provider":"Good Vibes Marina","version":"1.0","type":"link"}