How much A/C R134a loss is normal?

[michaelluscher]

I've heard around that 1oz a year is an acceptable figure

 

[redbone3]

My '95 Miata has never needed a top off.

 

[Chris142]

My '95 Miata has never needed a top off.

That's about to change! You jinxed it.

 

[antonmnster]

I smell refrigerant oil almost every time I start my car and add a can or two a year. That’s normal, right?