So my axia 8 years already, 50k mileage, never did any service

I thought must go change gas lol

So now what should I do? Just go ask them change compressor oil and that's all?

Cooling still got, just that I don't think it's good. But still got lah

I don't know if should take risk and go service, sometimes if touch already, then will have more problems.

I thought just give to perodua sc to do, basic a/c serv, but they don't let us in.. so what they do also, can't see.