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 logical successor to CHARM, I recommend you try it!

Link: lemon-manuals.la

Engine Oil




Engine Oil

API classification SH, SG OR ABOVE

Above -10° C (14° F 20W-40, 20W-50
Above -15° C (5° F) 15W-40, 15W-50
-25° to 40° C (-13° to 104° F) 10W-30
Above -25° C (-13° F) 10W-40, 10W-50
Below 20° C (68° F) 5W-40
Below 10° C (50° F) 5W-30
Below -10° C (14° F) 5W-20