Re: Only 2 gallons of AF?
I get real nervous when I hear about people saying they sucked x amount of antifreeze up the drive. I would say well yes Merc does say to fill it with AF but not using the muffs, they say to drain everything and then backfill through the hoses. That's the only totally safe way to use AF. And, AF is not NEEDED for freeze protection, it's only needed to reduce corrosion. I do use it but as I've said many times, I drain and backfill with AF that has corrosion inhibitors (-100). This stuff may be overkill (stays liquid down to about -54* as checked with my PG hydrometer) but the -60 stuff slushes up a little to easy for my comfort zone....
to all you suck the AF up the drive advocates, do a little test....open a drain into a paper cup and see what happens when you put it in the freezer....I just told a guy on the ifourwinns site to do this after I read he sucked it up the drive...he did what I said, put it in the freezer and it FROZE. He went out and drained the engine and backfilled. So he saved his engine, because I told him that way is WRONG because on a cool day, running on the water (45* maybe) hose, no load, the engine will not get hot enough to open the thermo all the way. It will warm up to 160* or the rated temp on the stat, but the stat most likely will NOT OPEN ALL THE WAY. And for the AF to get IN the raw water has to get OUT and it won't get OUT unless it opens ALL THE WAY. Yes you can drain the block first, but what's the point, I say just drain it all and then backfill. You can fog it without worrying about if the impeller is sucking it in (sometimes they don't) or running out of AF before you get it fogged....
