Dr Diesel considers coolant
Each week we ask experts in the workshop to share their expertise
Hello Diesel Doctor, I wanted to get your thoughts on coolants.
I have never been too picky, given my vehicles in the past have been owned by work.
Now I have gone out on my own as an owner-driver I wanted to get it right.
First I want to know if there is a particular brand of coolant I should be using and does it differ between the Euro and Asian models?
Coolants are not all the same and are made up of different additives and base products.
I always recommend checking with the manufacturer for recommended coolant requirements for your vehicle.
It comes down to the design and materials that make up the cooling system.
Then you can look at aftermarket options with equivalent specification to possibly save on cost.
There is no rule of thumb that one coolant is for all European and one for Asian-origin vehicles, as not all manufacturers use the same materials in their cooling systems.
The example being more and more engine manufacturers, especially European ones, are using alloys in cylinder heads, water pumps, thermostat housings etc. So in this case a coolant with an alloy corrosion inhibitor is a must.
It comes down to the design and materials that make up the cooling system, that’s what determines the type of coolant.
Remember, the manufacturers spent lots of money on research and development when designing a coolant best suited for their product, so use this to your advantage.
Also, never mix different types of coolant. Cheers, the Diesel Doctor. ■ Want advice? Email: firstname.lastname@example.org .
CONSIDER THE FACTORS: When determining your coolant, the design and materials need to be considered.