Usually 50 / 50 mix ( Ford states not to exceed 60 % antifreeze and preferably
distilled water )
The radiator on a 1995 Saturn is flushed by draining the coolant, refilling the engine with water, and adding a flush. It is allowed to circulate and drain before refilling with coolant.
50/50 for most application
You need a 50/50 mixture of water and antifreeze.
Any Ethylene Glycol based coolant mixed in a 1:1 ratio with water. Prediluted means it is already in the correct ratio.
A flush and fill of the coolant system can utilize three common methods. The first is purchasing and installing a tea into a heater hose and running garden hose water through system upon it clean running and then draining/recharging, The second is a professional flush/fill using an infuser machine. The third is unscrewing the pet-cock of the radiator then flushing with water and chemical, running the engine, redraining it and refilling.
The proper ratio depends on the temperatures your vehicle will be operated/stored in. Typically, a 50/50 ratio will be just fine. If you will park/store your vehicle in extremely cold (sub-zero) temperatures, you can increase to 60% coolant to 40% water.
50/50
I have repaired this hard to diagnose problem by draining and refilling the cooling system with clean water, then refilling again and running the engine with clean water, then back-flushing the heater core until I had good flow again, then draining the water from the cooling system and refilling with new coolant. Heat works again. The alternative is a $300 heater core and 6.6 hours of labor. At a shop this averages about $900 for the job. Other issues that can also affect this problem are: Low coolant? Bad thermostat? I had the same problem, I had hot water flowing through the heater core, blower blowing cold air. I found that the glove compartment was keeping the air controller from moving to open the air controller flap. After I removed the glove compartment it started working, then I put it back together and it still works.
That number is the capacity of the coolant system. Even after the radiator is drained there is still about 3-4 quarts in the engine and heater core lines. to completely replace all coolant you will need to flush the system with water and consider the remaining water in the system into your 50-50 mix ratio.
Check the colour the coolant does in your car at the moment. It will be either Blue or red.With that information , go to your nearest garage and ask for "red or Blue " engine coolant. Or you could wash out your coolant system, then refill with water and antifreeze mix usually at a ratio of 35-50 %. Hope this Help.Dominick
Minimum 50/50. Maximum 70/30 (coolant/water).
50% water to 50% coolant is the standard unless you live in a very cold climate where it goes down to -25 degrees F or lower, then you may want to mix 25% water to 75% coolant but never straight coolant.