GarageDex

Cadillac Ct6 A/C refrigerant type and capacity

GarageDex's A/C data shows the 2016 to 2018 Cadillac Ct6 (4 Cyl. 2.0 Eng.) uses 20.8 oz of R-1234yf refrigerant with PAG Oil compressor oil. Earlier years used R-134a, so check the year row below.

Shop R-1234yf Match the type on your under-hood decal

Key takeaways

  • 2016 to 2018 Cadillac Ct6: 20.8 oz of R-1234yf, PAG Oil oil.
  • The charge is a full-system amount; a top-off adds far less.
  • This model switched refrigerant types over its life (R-1234yf, R-134a) - use your year's row.
  • A system that is empty has a leak - fix it before charging.
Cadillac Ct6 A/C refrigerant and oil by year
YearsEngineRefrigerantChargeCompressor oil
2016 to 20184 Cyl. 2.0 Eng.R-1234yf20.8 ozPAG Oil
2016 to 20184 Cyl. 2.0 Eng.R-1234yf38.4 ozPAG Oil
2016 to 20184 Cyl. 2.0 Eng.R-134a40 ozPAG-46 8 oz
2016 to 20186 Cyl. 3.0 Eng.R-1234yf20.8 ozPAG Oil
2016 to 20186 Cyl. 3.0 Eng.R-1234yf38.4 ozPAG Oil
2016 to 20186 Cyl. 3.0 Eng.R-134a40 ozPAG-46 8 oz
2016 to 20186 Cyl. 3.6 Eng.R-1234yf20.8 ozPAG Oil
2016 to 20186 Cyl. 3.6 Eng.R-1234yf38.4 ozPAG Oil
2016 to 20186 Cyl. 3.6 Eng.R-134a40 ozPAG-46 8 oz

Recharge supplies for your Cadillac Ct6

Buy the refrigerant type shown for your year and confirm it against the under-hood decal. R-1234yf cans cost more and need a matching coupler.

R-1234yfR-1234yf can with a gauge and couplerShop cans Manifold gauge setReads high and low side pressure properlyShop gauges Leak detection kitFind the leak before you spend on refrigerantShop kits

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Source: Four Seasons - Compressor / System Refrigerant & Lubricant Specs. The under-hood A/C decal is the primary source for your exact car - it overrides any table. Charges assume a clean system with a new drier.