I have a 2008 Honda Fit and in the manual says "Honda doesn't recommend using synthetic oil".
I want to know why, as I can't find the answer online. Seems like any car can use synthetic, why mine says it shouldn't?
I'm using a semi synthetic by Shell as recommended by my mechanic, but I think I will switch to mineral by Honda next change.
That statement "usually" means that they have not chosen a preferred supplier...
I used a top quality fully synthetic oil in a diesel that had a turbo added and it was fine, the engine, did not have a synthetic specified either, especially as it came from a Nissan and was fitted into a Volvo...
If the synthetic matches , or exceeds, the specifications for the engine then it should be fine.
