Product review (5 stars): Perfect for your old brick
Bought three cans(needed 14 ounces) to recharge my wife's 1990 Volvo 244 a/c which had been dormant for at least the last 12 years.  After replacing the expansion valve and receiver/drier(something you should always do on a vehicle that hasn't had functioning A/C in any measurable time), I vacuumed the system down and recharged with the Duracool.  What a kick in the pants! 38 degree vent temps with 70 degree ambient temp.