Winterizing the Magnum?
 

I'm starting to think about winterizing my 27 sport. It has twin 320 EFI Mercruisers and Bravo 1s.

What do I need to do for below zero conditions?

Thanks,
Aaron

Re: Winterizing the Magnum?
 

I would start by putting fuel stabilizer in the gas tanks, then start the engines and warm them up till they reach operating temperature, then drain all the water out that you can, then pour five gallons of RV/antifreeze into a bucket and put a short hose in the bucket and connect the muffs to it and run all the antifreeze through the engine, then do the same to the other. lastly remove each spark plug and spray fogging oil into the cylinders and reinstall the spark plugs. Engines are done, then remove the batteries and put them on a shelf with a trickle charger on them.
Good luck

Re: Winterizing the Magnum?
 

Also this is a good time to change the oil and especially the outdrive gear lube

Re: Winterizing the Magnum?
 

Thanks......:)

BTW......your boat looks great!