my vehicle's stock coolent is pink in color. I am not sure about it's make. Since summer has arrived and I will have lots of motorway traveling, can I mix any other coolent in it?
It's Toyota's Coolant, it's easily available in 1 liter (Rs 900) and 3.78 liter (Rs 2500) pack at any Toyota's dealership.
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As far as i remember as suggested by Xulfiqar bhai, nestle water should never be added to the coolant since it has minerals which might be harmful for the internals of the engine.
normal water should suffice.
what about battery water?
use only pure distilled water. AC drain water can also be used.
Coolant specifications differ from manufacturer to manufacturer.e.g. Suzuki uses a 70-30% ration (water:coolant) Green ( not red)hence contact the car maker or download its manual, either way the safe thing is to replace your coolant entirely. and if it has pink colored then perhaps best to go for red ( for some reason red should use red and green use green) apparently there is more difference in them than just colorso do not add/mix. drain the system out and put in new pre-mixed LLC coolant (dark green can/korea) or PSO coolant. both are pre-mixed.DO NOT USE MINERAL WATER.ONLY DISTILLED WATER SHOULD BE USED. HENCE: IF YOU USE NON-PREMIXED COOLANT - FIND OUT WHAT IS WATER SYSTEM CAPACITY I.E. HOW MANY LITERS ( YOU CAN EST. THAT WHEN YOU DRAIN THE EXISTING COOLANT IN A CONTAINER)PUT IN HALF OF THAT AMOUNT AS COOLANTPUT IN OTHER HALF AS AGS DISTILLED WATERyou'done.