I have just read through a lot of the posts on this forum as I too have the same problem with oil consumption. I have the same make of car and it uses a lot of oil and I regularly have to add it.
I'm afraid I have no mechanical knowledge of cars (I'm a female that drives them but doesn't understand them!) but because of the problem I started to search to see if other owners of the same car had the same problem.
No idea if I have the R3A pistons but will try and find out.
If anyone does decide to contact Honda about this I'm more than happy for my details to be included.
Replacing pistons and rings is generally an expensive repair.
I think that might be useful to understand as first if your problem may come from the R3A pistons/rings or from something else.
It would be helpful if you could tell us:
- Civic Model and year of registration
- Engine type and serial number. (Engine serial number should be engraved on the front lower side of the engine, near the gearbox. You could ask it to the garage where you go for the oil change.)
- Total mileage of the car
- Every how many kilometers you need to top up the oil