I need help with the correct amount of oil

[Legitness211]

Hello everyone, I hope you are doing well.

So as the title suggests, I need help in order to determine the correct amount of oil that my system needs.

I have a chinesse SD508, a 55cmx30cm condenser, a couple of meters of #6, #8 and #10 hoses, and an evap the size of a Civic 1990 evap box.

So my compressor asks for 5oz of PAG100 oil, I drained the old oil from the SD508, I got about 4oz, and I filled with the same amount. I'm not sure how much was the remaining oil on the compressor.

Anyway, I'm replacing the condenser and reciever, I was being told to add 1 extra ounce, and I'm just a DIYer, but from what I understand, the amount of oil that the compressor needs IS the total amount of oil for the system right?

In that case, adding 1oz would not overcharge the system taking into consideration the remaining oil on the compressor and the oil on the evap, txv and hoses?

[bohica2xo]

Is that 2 meters of each hose size?

If you took 4 ounces of oil out of the new knockoff 508, it still needs 5 ounces to start with.

A 1990 Civic used 5 ounces for the entire tiny system. Some oil coats the inside surfaces of the system. So, knowing the size of the system helps with the oil estimate.

How big is the receiver / dryer you are using? Is it new or used?

[Legitness211]

Is that 2 meters of each hose size?

If you took 4 ounces of oil out of the new knockoff 508, it still needs 5 ounces to start with.

A 1990 Civic used 5 ounces for the entire tiny system. Some oil coats the inside surfaces of the system. So, knowing the size of the system helps with the oil estimate.

How big is the receiver / dryer you are using? Is it new or used?

It is a Civic 1990 but with all universal parts, It is not a new system, just the condenser and the reciever are new. The reciever is about 16cm height, 6cm diameter.

[Legitness211]

Is that 2 meters of each hose size?

If you took 4 ounces of oil out of the new knockoff 508, it still needs 5 ounces to start with.

A 1990 Civic used 5 ounces for the entire tiny system. Some oil coats the inside surfaces of the system. So, knowing the size of the system helps with the oil estimate.

How big is the receiver / dryer you are using? Is it new or used?

And I Guess It is about 2.5 to 3 meters with all the hoses

[bohica2xo]

So the mystery vehicle is just a 1990 Civic?

Yeah, put 5 ounces total in it and go with that.

[Tim]

So the mystery vehicle is just a 1990 Civic?

Yeah, put 5 ounces total in it and go with that.

I was going to say 5.7. Either way, I don't think oil will be the reason for any issues down the road.

[Legitness211]

So I should put 5 or 5.7 or 5.5?, I don't want to overfill the system.

[bohica2xo]

Unless your components are significantly larger than the OEM parts, the factory spec should be fine.

If you had ADDED 2 meters of #10 hose, a little more oil might be recommended.

Anyplace between 5 and 5.7 ounces of oil will be fine.