Is freon used in 18 wheeler a/c the same kind as in a 4-wheeler? If not what kind is used?

[clifflar63]

It is a detroit desiel motor, 2004. i think the oil part is low too.
I thought it was r134a, but wanted to be sure...thank you for your answers,,

[Billy T]

i think so the epa made all 4-wheelers go to r 134a back in the 90s it should be on the epa sticker under the hood .

[john m]

yes the same.134a. . add two ounces ester oil.