1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

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Old 10-29-10, 11:17 PM
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Quick Question

What does the sub zero reservoir do? I have one in my engine bay but I have no idea what it does, if it helps it start in the winter that would be awesome!
Old 10-30-10, 12:14 AM
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that's what i've always heard. don't know how well that system works being 20+ yrs old tho.
Old 10-30-10, 02:01 AM
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It injects a mix of 90/10% antifreeze/water into the intake to prevent icing in cold weather. California vehicles never came with it and Mazda issued a TSB recommending removal of the rest. Does it help, maybe in extreme cold, but I've never needed one.
Old 10-30-10, 11:56 AM
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Originally Posted by trochoid
It injects a mix of 90/10% antifreeze/water into the intake to prevent icing in cold weather. California vehicles never came with it and Mazda issued a TSB recommending removal of the rest. Does it help, maybe in extreme cold, but I've never needed one.
Alright thanks guys! Well, I have no idea if it even works, it had no fluids or anything in it when I got it. So I may just remove the system.
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