Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Refrigerant

All vehicles built prior to, and some vehicles built during the 1994 model year used an R-12 air conditioning system. However, some of those vehicles have been converted to use R-134a.
R-12 and R-134a are not compatible and should not be mixed.
A refrigerant tester should be used to determine which refrigerant is used in your vehicle before adding refrigerant to the system.