Manndolins
Member
I’m finishing up my crossover pipes, water pump, etc today and would like to start with all fresh coolant ..what’s best procedure to flush old stuff out?
2012 LR4 coolant flush
- Thread starter Manndolins
- Start date
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This is the perfect time to swap over to dexcool, which is available every where.
The procedure:
1: Remove lower thermostat hose from radiator
- Catch coolant with a pan
2: Replace hose
3: Fill with water through expansion tank
4: Start truck and run highest heat in front and rear for 10-15 mins
5: Turn truck off, let sit for 10-15 to cool down
6: Repeat steps 1-5 until water is absolutely clear.
7: Once deemed completely clear water, repeat steps 1 and 2
8: Use a radiator vacuum fill to vacuum and hold pressure for 15 mins
9: Fill with 1 gallon pure concentrated to mix with the retained water and fill the rest with premixed coolant
10: Bleed the air out! Most important step. Burp out the rest of air.
The procedure:
1: Remove lower thermostat hose from radiator
- Catch coolant with a pan
2: Replace hose
3: Fill with water through expansion tank
4: Start truck and run highest heat in front and rear for 10-15 mins
5: Turn truck off, let sit for 10-15 to cool down
6: Repeat steps 1-5 until water is absolutely clear.
7: Once deemed completely clear water, repeat steps 1 and 2
8: Use a radiator vacuum fill to vacuum and hold pressure for 15 mins
9: Fill with 1 gallon pure concentrated to mix with the retained water and fill the rest with premixed coolant
10: Bleed the air out! Most important step. Burp out the rest of air.
