MerCruiser Closed Fresh Water Cooling Systems... For full extended winter storage, after completely draining the cooling system, Mercury MerCruiser requires the use of propylene glycol antifreeze (with a rust inhibitor for marine engines) in the seawater section of the cooling system.
New Chevy Small Block (4.3L, 5.0L, 5.7L, 6.2L) Marine Fresh Water Cooling Kit (Fits Mercruiser apps years 1985-2001) You are looking at a Brand New freshwater cooling kit for Mercruiser applications years 1982-1998. This kit will fit 4.3L, 5.0L, 5.7L and 6.2L marine applications.
Because it is at a higher temperature than the cooling water used for other purposes (known as the LT cooling), the water for cooling the engine is known as the HT (High Temperature) cooling water. Cooling can be achieved by using a dedicated cooler or by mixing in some of the water from the LT cooling circuit. The LT cooling water is then cooled in the sea water coolers.
Marine engine parts & replacements from the UK's # 1 marine shop. Boat parts & spares for outboard & inboard engines plus sailing wear ranges.
Re: mercruiser 888, aftermarket closed cooling system I would guess that the heat exchanger is probably plugging up on the antifreeze side. Usually from the rust and trash breaking loose on the inside of your blocks cooling system. Problem is, you can't get to it to clean it out.
Mercruiser Cooling System The cooling system of your Mercruiser engine keeps it from overheating and ensures that it’s operating at its best. It’s important to keep the entire cooling system updated and maintained since its health is at the forefront of your engine’s overall performance.
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