This winter I stored my car outside and one day I just checked the anitfreeze. It was only good to 5 to 0 degs. We had a few days that got that cold for a few hours, but we had a mild winter. Just wondering if I should be concerned with a cracke block. I have ran it a few times and not have noticed any antifreeze in the oil. Should I be ok.

 

Get one of those anti-freeze testers at a local auto parts store. You will be able to know how good the mixture is in the car. As long as you don't start the car on those cold cold days and your mixture is correct, I would say you should be fine.

Buddy of mine thought nothing of checking his anti-freeze for winter and cracked the block in his Supra one cold morning after starting it. Gave him an excuse for an engine upgrade though.

 

most def too much water in there. and thats what freeze plugs are for, they will pop out before you crack your block. just dont start it and you will be fine.

 

That is not true, Freeze plugs where not designed to relive the pressure from frozen water in the water jackets. They are for getting the casting materials out of the block at the plant. THEY WILL NOT SAVE YOUR BLOCK

To the OP, You should be fine if the coolant checked out for those temps.

 

freeze plugs were designed back in the day when people used water in their engines instead of antifreeze. so the ice would force the plugs out "saving the block" most often the block got cracked. do a google search, and read a little bit.

 

Incorrect, The proper term is actually core plug, They are used when the block is cast. Ive seen LOTS of engines that have froze and the block give way long before a "frost" plug pops out.

In regards to the OP, you can pressure test the cooling system, keep an eye on your coolant levels and look for coolant in your oil. IMHO your probaly fine, but do not assume this. Make sure you get your misture right next time.

 

read the post right above yours

http://en.wikipedia.org/wiki/Freeze_plug

http://answers.yahoo.com/question/in...3165757AAkpPhh

 

Im not going to argue my point with you, Lots of old engines dont even have "frost" plugs and to continue would have no benefit to the OP's question. It is a common misconception that a core plug may save an engine. In the odd even it may actually pop out, chances are the damage has been done to the block. It is a hole in the block meant to be a supporting arm for the sand casting. Modern engine used screw in plugs(such as the LS series) and engines such as the flathead ford(introduced in 1932) dosnt even have core plugs.

 

Just because it's a commonly held myth doesn't make it true.

Fact is they are artifacts of the casting process. How do you think they get the "sand" out of the casting after the metal cools? How come blocks crack from freezing water all the time if "freeze" plugs are supposed to prevent that?

Fact is, frozen water is a solid. It is not a liquid. It is either liquid or solid. As it freezes, it doesnt turn into slush, it turns into a solid, in the shape of whatever container its in. The ice will not slush it's way towards a freeze plug like a liquid because it is not a liquid and it does not move as it freezes.

 

Its ok you can tell me im right....

lol