Coolant type

[Hasdrubal]

Going to flush and replace the coolant in my M1009. Always used regular green before. Wondering what type of antifreeze you guys have used, what gives the longest corrosion protection.

 

[Westech]

Just get the Green stuff and replace it every 3-5 years.
No need to get fancy.

 

[Warthog]

Green

 

[cucvrus]

GM Dex-Cool

GM Dex-Cool if your asking. Well maybe not. A mechanic that works for me said it causes corrosion. I thought all antifreeze did eventually. Well anyway I have been using it for years and every new GM vehicle I get has it is for nearly 20 years. So I am still going to keep using it. It makes it like 1 fuel for 1 Army (diesel) and 1 antifreeze for all vehicles. I guess. Sort of. It works and it's an opinion thing again. Can't believe everything you read on the internet.

 

[Drock]

I think the red "Dex-cool" thing has just about ran it's course. You really have to look for it on the shelf these days. I just use the green prestone mix with anything stuff with ah bottle of (water wetter)http://shop.advanceautoparts.com/p/.../7120012-P?searchTerm=red+line&zoneAssigned=1 , It drops the temp ah few degrees and is supposed to lubricate the water pump bearings.

 

[Skinny]

DexCool is a great antifreeze when changed within a reasonable amount of time. I think it got a bad rap when people thought it was a lifetime fluid as GM touted. I would personally not spend the money for it. I run plain jane green and change once a year...easy peazy lemon squeezy. I think as long as your grounds are ok, you won't have to much dissimiliar metals in the cooling system to cause massive amounts of corrosion issues.

 

[max bowtie]

I have used Amsoil Antifreeze in my vehicles and vehicles I've worked on and have been impressed with it

 

[cucvrus]

Boo kho bucks

 

[hoplite666]

There's always Evan's Waterless Coolant. Big money though. I suppose if my pockets were deeper I'd run it in my rig. I use it in my motorcycles. They do, however, use less than a gallon of coolant so @ $45 a gallon I can manage.
After 30 years the backing plate on my water pump was etched and corroded quite a bit, that would have never happened with Evans.

 

[scottladdy]

Dex-Cool. I change it and the t-stats between 3 and 5 years.