Ask Honest John

Most recently answered engine oil questions
Does my Toyota garage use premium oil for my hybrid car? Or best to turn to my local garage?
My Peugeot 2008 1.2 Puretech had an MoT and oil change a year ago and I have just noticed I was charged £68.47 for oil ! This seems an extraordinary amount, no quantity was listed. Can you tell me what...
I am thinking of buying a Honda CR-V 2018 petrol and keeping it for a long time. As such I would be getting the oil changed every six months or 5000 miles, however I have just been told that Honda engines...
I’ve seen a 2018 Honda CR-V for sale for £21,995 and after making a few inquiries l read that some models had engine oil leaks. Is this something you are aware of? Also do you think this is a good buy?...
I have a two year old Citroen Relay van (2.0 diesel). It had an oil and air filter change a year ago at 4000 miles. It's now done another 4000 miles and a change oil warning light comes on at the start...
What engine oil should I use in my 2012 Audi Q5 3.0 TDI?
My car maker advises fully synthetic 5W/30 engine oil. Are all oil brands of 5W/30 equal?
I have just found oil in my radiator and expansion tank. Any thoughts/suggestions as to what this could be?
Can there really be any difference in engine oils with specification 5W/30 and that meet ACEA C3 for diesel cars? I see that several oil manufacturers produce engine oils for specific cars, eg. VW cars,...
What's the right engine oil for a 2009 Citroen C5 2.0-litre petrol? There are so many brands and so many different types of 5/30 and 5/40 oils but which is the right one?