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: Service Precautions

Look for and use ONLY engine oil that meets GM Specification. Oil that does not have the correct specification designation can cause engine damage not covered by warranty. Do NOT use engine oil additives.