coolant

I've noticed over the past couple months of cruising that the m25 in my E27 goes through a lot of coolant. Recently I noticed some in the bilge, and almost none in the reservoir, so I realized I had to deal with it right away. I added coolant, started the engine with the covers off, and...

Sorry in advance for the simplicity (and length) of these questions but Google isn't getting me where I need to be.... I bought a 1981 E30+ with a Universal 5416 (M-20) about a year ago. She was well taken care of by the PO but I'd like to dive into some basic maintenance stuff (and could use...

First time posting, hope to get an answer or I'm going to have to B O A T.... pump replacement is about $600 Recirculating pump (coolant pump) on our universal 5432 went out. I found the bearings to repair the pump but there is a seal, called the Slinger, that prevents water from entering the...

A fellow boater asked me recently if I knew about diesel coolant for his freshwater cooled engine. I haven't heard about that, and have been using regular vehicle rad coolant, mixed 50/50 with water to add to the cooling system in my Universal diesel engine. Does anyone know if there is a...

While servicing my engine this week I got to looking closely at the coolant overflow reservoir. This has always been empty and I assumed it was for expansion should the engine overheat. I keep the water level at the manifold just below the lip at the cap. The cap on this bottle is a make shift...

Looking for a convenient fix for a coolant recovery tube that has separated itself from the filler neck of the heat exchanger. The fitting is factory crimped to the neck but has worked itself loose and there is no way I can crimp it back tight enough not to leak when the pressure builds...

On my 1989 Universal M25XP I still have the original hose on there and want to replace it - but I recall the hose has different size ends. One seems to be bigger than the other. Mine is a short hose, about two inches coming down from the pump, a 90 degree turn towards the side of the engine and...

I have it in my head I want to install an Red Dot brand cabin heater in our 1986 E32-3 that uses engine coolant for the heat source. We motor a lot here in the Pacific NW and capturing some of that waste heat just seems like a good idea in these cold winter months. I have kind of looked at where...

Hi All - Well, two weekends after beginning the replacement of my Raritan Water heater, I finally have the new heater in the lazarette and ready to install. What an interesting exercise that was - they must have put the water heater in before they built the boat, as it was much larger than...

Hi All, I'm hoping someone will have a solution for me. I have a Universal M35A 30hp 4 cylinder on my E35/3. I have an annoying coolant leak which I can't find. I've removed the heat exchanger, cleaned it, put new gaskets on it - no leak there. I've checked all hose clamps on the fresh...

Long shot here but does anyone know the correct radiator cap for an M-50? I am sure there is a commanly available cap that I can get at an auto parts store but they are all a little different and the one I bought that I thought would work does not appear to be long/deep enough. I am hoping for...

Ok - this will sound stupid - but I need to know anyhow: I've just installed a new water heater - so all the coolant is out of the system. What is the best way to put in the new coolant to avoid any potential problems with air pockets getting caught in the system, thus overheating the...