Technical Articles
TEFBA Radiator Filters
I’ve been asked to write some explanatory information on the use of the ‘Tefba’ Radiator Filter.
What the filter does is simply to filter the hot cooling water as it leaves the engine, before it reaches the
top of the radiator. Normally, without the filter, any foreign bodies such as rust particles, paint flakes, mud
build-up etc would reach the top of the cooling tubes in the radiator, which could, depending on the amount
of contamination, very soon become clogged up and reduce cooling efficiency.
On a new car, such a filter is not necessary, because presumably the inside of the engine and cylinder
head are quite clean. On a 35 to 45 year old car however, such as our club vehicles, quite a lot of
contamination can have occurred, and considerable amounts of debris can be dislodged, particularly if the
system is disturbed by an engine re-build or even removing and replacing the cylinder head for a top overhaul.
From personal experience I have been amazed at how much rubbish is captured in the filter after this type of work.
For this reason I strongly recommend the filter be fitted whenever possible, particularly when you figure
that the cost of a filter is less than half of that of a radiator clean!
Happy Healeying,
John Dowsett
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