can some one tell me what this is for , i think it has coolant in it,it is located on the pasenger side on the firewall.It says sub zero on it and something about 90% coolant and it is not full ,do i need to fill this up.

Cold Start System





It's completely USELESS, it was designed to keep the intake from freezing up in approx -40C weather, Mazda later recalled them and said remove it, they don't work, as far as I remember.

FYI the coolant in that bottle is in NO WAY connected to your motor cooling system it's entirely separate.

Mazda stole the idea from the military

so i dont need to worry about that thing being fullor if it works ,thanks for all the replies.

Nope! None, what-so-ever. It's SUPPOSED to be filled with some methylene concoction, or some ****, but you haven't gotta worry about that.



https://www.nopistons.com/forums/pub...#>/BURNOUT.gif

Actually 90% anti-freeze 10% water





Any anti-freeze has ethylene-glycol in it

My 86 had that. Im not really sure why mazda did it. Just another one of their crack smoking ideas (like the logicon)

don't even bother w/it. its the zero degree start i think. I don't even think the canadians even bother w/it.

[quote name='cymfc3s' date='Jun 24 2005, 07:47 PM']My 86 had that. Im not really sure why mazda did it. Just another one of their crack smoking ideas (like the logicon)


[/quote]



yeah they had a perfectly reliable one, that worked. then they decided to make the fc one, that doesnt, why? or like the rx8, i mean you're not supposed to be able to start it, wtf are you thinking?

I fill mine up with NOS. Not Nitro.





'='

Canadians don't use them, they don't work



Mine is removed, my car started up perfect every time in -30 C weather without it

Mine just leaked like a big dog, I was pulling my hair out trying to find the coolant leak in the main system, I must have bleeded the damn thing 10 times.

i started mine aswell with out it in -30*c weather, i also burned mine, 20 year old plastic smells good being burnt.

haha why did you burn it

How do you completely remove the cold start system?

Fabricate a blockoff plate for the intake manifold, or tap and set-screw the vacuum holes for it in the manifold.



Tapping and set-screw method is less bulky and more fun.. and more clean

[quote name='ColinRX7' date='Jun 26 2005, 09:42 AM']haha why did you burn it


[/quote]



colin i'm sure you've been called useless before... see i just burned you lik i burned the coldstart pos deally. lol j/k

[quote name='nismo convert' date='Jun 26 2005, 02:45 PM']colin i'm sure you've been called useless before... see i just burned you lik i burned the coldstart pos deally. lol j/k


[/quote]



lol, burned it! I spiked mine in the dumpster once I removed it, what a waste of engineering time that must have been.