Testing the engine coolant

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Model: C3 2002-2005, Original shape model
Year: 2002 (52)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 100000
Trim Level: Exclusive
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: DV4 16-valve diesel (90 PS)
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It is impossible to tell the state of the engine coolant and its level of protection without looking at it with the aid of a tool. The tester tool required can be purchased cheaply from this link to ebay or this link to Amazon.co.uk. When you have the tool, its takes only a few steps to look at the coolant colour and measure its level of winter protection. Should either of these fail, visit this topic for replacing the coolant on a C3 topic for information.


How to test the coolant on a Citroen C3

1. Ensure the engine is cool or even better, cold. Do not try to remove the coolant cap on a hot engine.
Remove the cap and use the tool to draw up some coolant into it.
remove coolant expansion chamber cap and insert the pipe into the coolant
remove coolant expansion chamber cap and insert the pipe into the coolant
2. Draw coolant into the gauge by squeezing the bulb.
draw coolant into the tester
draw coolant into the tester
I had to do this in two passes by fully squeezing the bulb to draw up half the gauge, inverting the gauge so all the liquid runs into it. Gently squeezing the bulb with the tool upside down keeping the coolant in the gauge. Then took a second draw up to the fill line.
coolant tester up to the fill line, may take 2 passes
coolant tester up to the fill line, may take 2 passes
The fill line may not be easy to see, so I have marked it as a white line in the picture. You can see this one is a little over the line :roll:
fill line in antifreeze and coolant tester
fill line in antifreeze and coolant tester
Squeeze out any excess to bring it to the line or add more by inverting the tool and gently squeezing the bulb and drawing more coolant.
I had a few air bubbles on the gauge needle so I tapped the tool body gently to remove them and let the needle settle. With the gauge set vertical (by reading the top needle), a reading can be taken from the scale.
tool vertical and a read can be taken from the scale
tool vertical and a read can be taken from the scale
If your coolant isn't a nice clear pink colour or doesn't offer the level of protection you require (at least a recommend -35°C) it could be time to replace it with this OAT coolant for the C3 (here)
Pick us your own tester here (Amazon) or here (eBay).
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