coolant

Hi CSRs! Been lurking on here for a while, and this community has already helped me figure out a bunch of stuff for my 1990 270 DA and 1980 260 DA. But now the 1990 7.4 L Mercruiser is having a strange coolant issue that has me stumped. When the engine runs up to temp, the coolant recovery...

I want to drain the coolant from both engines. I am looking for some suggestions on what else you would do if you are spending the time and money to do the change and flush. Impellers would be an example. Would you look at changing the impellers if you were unsure the last time they were...

Hey all, So have an interesting problem that developed near the end of the season this year. My Westerbeke 4.5kw Gen is slowly losing coolent somewhere. It does not appear to be leaking out of any hoses/fittings as I don't see any coolant in the bildge, however when I'm running the gen over...

Hey there, I just bought myself another Sea Ray 5 months ago, a 345 sedan Bridge with twin 7.4 454 engines that were rebuilt 40 hours ago. Since it's new to me I have some questions... What oil do you use for the engines? And can it be synthetic? The engines have red coolant in them now and...

My Merc 8.1L port engine seems to be losing coolant in it's closed cooling sytem reservoir container. I wanted to pressure test the system by fitting a Stant hand held pressure tester up to the reservoir tank. Will this accurately determine if there is a leak in the system? There is no coolant...

I tackled a project this week to repair some leaky remote oil tubes and seals (the ones in back, behind the engine). So I had to remove the exhaust manifold and riser just to access it. My question is: How much coolant should have come out when I opened the petcock on the bottom of the...