cooling system capacity

[Cav Trooper]

Ok, I just flushed and refilled my M37 cooling system. I checked the internet for capacity and found that it was 25 qts. Bought 3 gals distilled water and 3 gals straight undeluted antifreeze. Filled the system and found it would only take 4 gallons. Finally found the tm and it stated 18 qts. I'm assuming someplace somebody got it wrong to capacity. The site I looked at said that it was all the specs. as delivered to the US Army. I thought at first since I couldn't get the 25 qts in that I possibly had an air lock and I tried to bleed the air but it didn't make a difference. I drove a couple of miles and it never overheated and stayed at 160 deg. like always. Anyone else found the difference in specs?

CT

[isaac_alaska]

18 seems right, maybe 25 is if you have the additional heaters installed? i know i've drained a few and never had close to 25 qts

[Cav Trooper]

I have the fender mounted heater and still got 18 qts. Was just curious about what was in print.