Ask Honest John

Most recently answered coolant questions
I have a three and a half-year-old Hyundai i30 diesel with 60,000 on the clock. The franchised dealer who services the car is telling me that the coolant and pollen filter both need replacing at a cost...
You often advise about cooling down turbos before switching off the engine. I have a TC petrol engine and during normal driving the oil temp rises to 94/95C. What temp should it drop to before switching...
My daughter has a 2006 Ford Ka, bought new and with full service history by Ford. Driving recently, the "high coolant temperature" warning light came on. On her May 2013 MOT there was an "advisory" that...
My sister drives a 2008 Nissan Micra 1.2 manual and noticed smoke/vapour coming out of the dash and a substance like cooking oil on the rear carpet a few days ago. We initially thought she spilled some...
I have a Rover 25 1.6 petrol that has lost coolant on a very small scale over the last five years or thereabouts. However, over the last week it has lost about one litre of coolant and my local garage...
My 11-year-old Ford Puma 1.6, 90,000 miles did run and drive like new, but now has an overheating problem that has baffled my garage. It has a new water pump and thermostat. After 10-12 miles the temperature...
I recently bought this car privately and if I put the heater on to clear the screen, I can smell coolant. Can you tell me if it's a potential problem please.
I own an Audi A3 diesel on a 57 plate and coolant is disappearing. There is no noticeable leak and it doesn't appear to be mixing with the oil. Before I embark upon a costly garage investigation have you...
Why would coolant be leaking from the back of the engine?
I own a 1994 Honda Civic, and I think I need to top up the coolant in the engine as the tank next to the radiator is hovering around the minimum level when the engine is cold. What type of coolant do I...