Prestone Coolant Flush, Engine Coolant Flush For Car To Prevent Problems & Maximise Performance, Car Coolant Flush With Advanced Cleaner To Dissolve Corrosion & Scale, Safe For All Engines, 1 Litre

I brought This as I needed to flush my coolant tank and hoses due to a oil cooler leak I followed the instructions on the bottle and ran the car for about two hours and after dropping it from the radiator the coolant now looks like coolant so it did as it said it would at a great cost so on my next coolant service il use this again to keep my coolant looking fresh to help the car stay cooler.

Before prestone I used first liquid moli for a clogged heater core after replacing the thermostat and observe that my system doesnt have any rust as I change coolant every 2 years. Spotless but no heating..Few sand like bits came out but it did not unclogged the heater and no heat was comming out. Then I pured prestone flush directly in the heater core pipe before the firewall and let it sit for 5 minutes. It was not going in easy as the core was blocked. I thought it might be the silicates from the coolant and prestone says it deals with it and thats wjy I bought it. At first it made it worse. There was no heat on the return pipe from the heater core. As an amateur mechanic I thought that I really clogged everything now. Then after an hour the return line started warming up and there was heating in the cabin. Yes baby! I left the other product for one hour and the prestone for multiple hours running at operational temp. Multiple flushes before and after and MB 325 G48 coolant with deionised water in the end. I dont write many reviews but I thought this is useful. Mercedes clc cdi c200 2009 with no heater valve. In the past I used citric acid but it coagulated and had to flush with distilled vinegar and air pressure pump. Maybe the citric acid I used was crystals..I hope this helps.

Worked ok. removed more trash than just back flushing.

Value for money, compatible with a wide range of vehicles, ready and easy to use, takes out dirt and improves engine cooling.

Good product do the job

I did a full flush of the radiator and air cooling system with clean tap water a couple of times to get the worst of the crud out, then used this with a small amount of de-ionised water to fill the system, bled the air out and ran the car until hot. After emptying and flushing the system again with de-ionised water a couple times, I used Prestone Coolant NEAT with no extra water (as recommended as part of the process) and now my engine temps seem to have gone down by 10-15 deg, enough to keep it comfortably in the middle of the gauge, so it and the new Prestone coolant has done what I wanted and it's guaranteed for 5 years Follow the instructions, and maybe watch a YT video or two, but simple enough process for a not particularly mechanically minded person like me.

Hi all I've tried too wash out oil from my coolant bottle on my mercedes nothing work but when I came across this prestone coolant flush I thought why not and it. Does work amazing best out there

Used as per instructions in a Passat which had a ruptured oil cooler which filled the cooling system with engine oil. Most of the oil was in expansion vessel, used as per instructions and 2 months on still getting a trace of oil which is left over from damaged oil cooler, so did not do a very good job of flushing.