Guys I have been modifying a few things on the car and decided to add my Aftermarket Coolat tank (like the Jaz brand and Summit Brand). The only question I have is to I place the hose on the Bottom or the Top of the Tank???
What would be the con's to haveing it branch off each one into a "Y" and then going into the Radiator cap. The stock coolant system pulls the dex cool mix back into the radiator, I am just trying to make sure I won't have any problems.

Any suggestions?

 

Im gonna use my washer bottle.



David

 

Hose from Rad neck goes to bottom, so system pulls coolant from the overflow during cooldown. Top fitting is vent.

 

It could go through the top of an aftermarket bottle, so long as there is a vent and a tube going down to the coolant. Much like Hondas have.

 

So are you saying I need to Cap the top of just leave it open for air (I didn't think we needed air in the system?)
I am a Newb when it comes to coolant, lol

 

This is true, but I think very unlikely, or both fittings would be on top. You need a fill and a vent, and that would mean the bottom is the vent. Wouldn't work very well! I was assuming a simple tank with 2 fittings, and no internal hose. Look inside to make sure it doesn't have an internal hose.

Coolant expands when it gets hot and needs someplace to go - the overflow tank. When the coolant contracts and shrinks, the system must 'drink' from the reservoir to stay full. Same is true as air bleeds out of the system after a refill. Anytime coolant moves in or out of the overflow, air must too, and the vent allows this.

However, if the car ever boils over, steam and hot coolant will escape through the overflow tank, too, and spray out the vent fitting. For this reason, it's a VERY VERY good idea to put a hose on the vent fitting, routed to safely discharge the hot stuff on the ground.

 

So recirulate from the bottom and the Top can be made to discard fluid to the ground if it ever boils over?

 

Yup.