antifreeze

60 degree Fall weather in the South now where it may dip into upper 20s for a few night hours, but still plenty of days for boating before full December winterization. Thinking to run RV antifreeze in via muffs, engine temp up, just for those occasional nights A bad plan? Open for feedback or...

HELP please. I have 7.4 Mercs with V drives. I read about drain plugs. I found two drain plugs on each engine. I pulled one of them out and antifreeze starting coming out. Do I need to pull different drain plugs? The salt water comes up through the sea strainers for the exhaust. I was...

My port side motor seems to be giving off some smoke. I went through the engine compartment today - oil looked great but I noticed the overflow container was empty. On the container there is a cold line which the starboard engine is filled with what looks like anti freeze. The overflow runs...

Hi, I have a Sundancer 240 and plan to keep her moored over the winter. I hope to use her about once a week (depending on the weather). The temperatures here over the winter does not usually drop below -5C (23F) and the seawater does not freeze. I plan to put RV antifreeze through the...

Arguments I have read sound like as follows: a) Use Muffs to bring in af. It's easy to miss a plug, and if you do, you won't fully drain the block and will end up with a cracked block. b) Drain block and backfill through thermostat housing. It's what Merc recommends, and the muff method just...