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

Engine Oil



API Grade: SE or better and recommended viscosity SAE.

Use the chart below to determine SAE viscosity by temperature range anticipated before next oil change:

Temperature Range Viscosity

40° F and Above 30

Between 10° F and 60° F 20

10° F and Above 20W-40 or 20W-50

-10° F and Above 10W-30, 10W-40 or 10W-50

50° F and Below 5W-30