Diagnostics & Symptoms

The Bottle That Doesn't Match: Why Coolant Colour Is a Bad Guess

Coolant colour is not a specification, and ‘universal’ rarely is either. Here’s what happens when modern OAT, HOAT and silicate-free coolants get mixed — and how a five-minute spec check and a winter strength test can keep a cheap top-up from becoming a head gasket bill.

Nov 8, 2026

What Your Nose Knows: Six Car Smells a Garage Reads Like a Fault Code

A car can tell you a lot before a warning light comes on — if you know what you are smelling. From hot coolant to a clutch that is past its best, here is a forecourt-friendly guide to six smells, the checks worth doing, and when to stop rather than book.

Nov 8, 2026