5w-30

Hello I am worried my local garage has put the wrong engine oil into my Honda Accord. My car: a Honda Accord 2.2 i DTEC EX Tourer 5dr (08 - 09) - Diesel 2199cc My local Honda dealer just say put "5W-30 Fully Synthetic" in. They wanted to charge £185 for an oil change (including filter). They...