Does it work with diesel engines?

I think it will work but may turn green rather than yellow. There are fluids designed for Diesel engines and I believe those are red in colour.

is this safe for the coolant system? i have it and i think some got sucked into the coolant tank

Yes, It's safe for the coolant system if you use the liquid in accordance with the instructions.

How can I use this if my radiator does not have a cap?

It should go into the opening for the cap on the overflow bottle which should be where you can top up the coolant level.

think if you put this on during warm up it will give a false negative. Doesnt do full green but very very light blue due temp chemical react ?

I used it on my Capri and had it in place from start up. I ran the car until the thermostat opened and the car was operations at full temp. Thankfully there was no colour change at all. Shouldn’t give a false negative and shouldn’t react with temperature. Only if the system contains exhaust gasses.

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Reld Cylinder Head Gasket Tester Kit CO2 Combustion Leak Gas Test Universal for All Cars and Motorcycles Petrol Diesel Block Rapid Engine Leak Detector for 50 Tests

Reld Cylinder Head Gasket Tester Kit CO2 Combustion Leak Gas Test Universal for All Cars and Motorcycles Petrol Diesel Block Rapid Engine Leak Detector for 50 Tests

Product ID: 136048058

Details

Alarm
Visual
Brand
RELD
Colour
Multicoloured
Global Trade Identification Number
Item weight
240 Grams
Operating humidity
90 percent

🔧Universal adapter 25-55mm

⏱️Rapid leak detection

⚙️99.9% test accuracy

Reld Cylinder Head Gasket Tester Kit CO2 Combustion Leak Gas Test Universal for All Cars and Motorcycles Petrol Diesel Block Rapid Engine Leak Detector for 50 Tests

Product ID: 136048058

Details

Alarm
Visual
Brand
RELD
Colour
Multicoloured
Global Trade Identification Number
Item weight
240 Grams
Operating humidity
90 percent

🔧Universal adapter 25-55mm

⏱️Rapid leak detection

⚙️99.9% test accuracy

R1119

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Africa.

Secure transaction

Description

🔍 Detect leaks before they cost you—be the boss of your engine health!

LIGHTWEIGHT PORTABLE - Compact 240g design lets you carry professional-grade diagnostics wherever your vehicle takes you.
DIY ENGINE HEALTH CHECK - Skip the mechanic—quickly diagnose cylinder head gasket leaks yourself and save time and money.
PRECISION YOU CAN TRUST - Achieve 99.9% accuracy with the original Reld cylindrical tester, engineered in the EU for unmatched reliability.
UNIVERSAL COMPATIBILITY - One kit fits all—from cars and motorcycles to trucks and heavy machinery with a versatile 25-55mm adapter.
NO ENGINE DISASSEMBLY NEEDED - Get clear, easy-to-read results without dismantling your engine, making maintenance hassle-free.

The Reld Cylinder Head Gasket Tester Kit offers a fast, reliable, and universal solution to detect combustion leaks in petrol and diesel engines. With 99.9% efficiency and a wide adapter range, it empowers vehicle owners to perform professional-grade diagnostics without engine disassembly or costly mechanic visits.

Specifications

ASIN	B07RS3N98V
Alarm	Visual
Best Sellers Rank	2,106 in Automotive ( See Top 100 in Automotive ) 94 in Diagnostic, Testing & Measuring Tools
Brand	RELD
Colour	Multicoloured
Country of Origin	Poland
Customer Reviews	4.5 4.5 out of 5 stars (7,955)
Global Trade Identification Number	05907440789067
Item Dimensions D x W x H	17D x 9W x 5H centimetres
Item Weight	240 Grams
Manufacturer	RELD
Model Number	7777252
Operating Humidity	90 percent
Part Number	7777252
Power source	Battery-Powered, Corded Electric, Solar
Product Style	Classic
Unit Count	1.0 count

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R1119

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Africa.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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