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    Battery Switch Confusion

    Hm okay yeah that clears some things up. If I were to wire it up to a switch would i connect all of those to the switch how it is?
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    Battery Switch Confusion

    That's what I want, just an ON/OFF switch. i;m assuming it won't matter what kind of On/Off switch I get their all the same. Horsepower of my engine? That would be 120HP inboard Mercruiser.
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    Battery Switch Confusion

    Hello everyone. So I'm looking to get and install an on/off battery switch for my boat, since everytime I go to use the boat I have to manually connect and disconnect the wiring so it wouldn't drain if something was to be left on. I've watched plenty of How To videos and im still confused. It's...
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    Does the antifreeze you use really matter?

    Got it appreciate the advice and help! Seems like draining the block is better than leaving it full with even antifreeze. What kind of -100 antifreeze do you use? Majority of what I'm finding online are all rated -50.
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    Does the antifreeze you use really matter?

    Fair enough, okay then I will probably consider doing it that way, with the plugs out. If i do do it that way Im assuming any antifreeze would work since Im still going to drain it out of the engine? If Im not wrong I only have 2 drain plugs(87 4 cylinder merc 120 inboard).
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    Does the antifreeze you use really matter?

    Yeah I always run my boat in fresh water. Do you do that procedure? Leaving the drain plugs out over winter? If I do drain the antifreeze out of the block wouldnt there be moisture buildup or would it just evaporate or escape through the opening of the drain holes? Just want to do it right...
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    Does the antifreeze you use really matter?

    Yeah temps here in Ontario get below 0 probably around -25 *C on a coldest winter day. Is this any better?
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    Does the antifreeze you use really matter?

    Got it so it doesnt really matter which antifreeze I use? I could just drain the block but I want to be extra sure that there wont be any water in there that could freeze. My boat is around 35 years old but the motor runs like its new. Don't want to risk ruining a good motor... So would it be...
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    Does the antifreeze you use really matter?

    I live in Ontario, Canada, where temperatures can drop as low as maybe -25°C on the coldest days. I've watched several videos where people winterize their engines by first warming them up and then draining all the water. To ensure no water is left behind, they use an air compressor to blow out...
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    Does the antifreeze you use really matter?

    So bought antifreeze to winterize my boat this year. It's the winterproof all purpose -50 pink antifreeze. As I was reading in the side label of it it said that it's OK to use it for boats... a few lines away it stated "This product is not designed as a heat transfer fluid for closed loop...
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    What oil should I use?

    Okay ill go with the rotella, seems like a lot of people are using that oil without a problem.
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    What oil should I use?

    Rotella makes marine oils? Or are all of those brands for cars? Found Rotella 15w-40 T5 oil. Would that work for a 87 I/O 120hp merc motor? Found this...
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    What oil should I use?

    Sounds good Ill go with the 25W-40 that I found online. Rated for inboards and outboards. Would any harm be done if I run regular full synthetic car oil in my inboard? Or are they different oils?
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    What oil should I use?

    So... looking to change my boat engine oil this year before winterizing it. What oil should I use? I have a 4 cylinder 2.5, 120hp merc inboard/outboard engine. Its an 87. It has an oil cap on it saying 10W-30. I looked online to see what comes up, I found few online a Quicksilver to be specific...
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    What is the right jet for my engine?

    So I have a few spare main jets for my carburator for 120 Merc. Right now I have #70.9 jets in carb. Tried to look online to see what the factory jet is for the engine carb and can't seem to find it. Figured i'd try and get advice/help here. What is the factory main jet sizes for the Merc 120...
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    1987 2.5L Mercruiser inboard/outboard

    Yeah I can tell quality wise there's a big difference with the OEM one. Mine is basically brand new it has less than 10 hours of use on it. I opened it up today and it looked clean inside. I tried installing the OEM carburator and it completely flooded my engine with gas. Had to take out the...
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    1987 2.5L Mercruiser inboard/outboard

    Yeah, it was around $200 don't know if that matters. It wasn't anything cheap. I know OEM is obviously better but what is the difference? The new carburator that I have installed right now works great and has consistent gas flow.
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    1987 2.5L Mercruiser inboard/outboard

    It has an aftermarket carburator. I still have the OEM one.
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    What gas do I use in my boat???

    Appreciate the replies guys. Would using higher octane be better for the engine? If I use Octane 93 in my instansce, or would that make no difference?
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    What gas do I use in my boat???

    Hi guys, I'm a new boat owner and I still have the question to what is the right gas that I have to use in my boat. I know that I should be using ethanol free gas but where I live here in Ontario, Canada, they don't have ethanol free gas... I have a 1987 Mercruiser 2.5L in my boat and the last...
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