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


Type SF, SG, SG/CD
(Motor Oil, API Service SF/CD, SG, SG/CD)


Mineral base oils:
Above 60°F (16°C) 40
32° to 86°F (0° to 30°C) .30
14° to 50°F (-10° to 10°C) 20, 20W-20
Above 14°F (-10°C) 20W-40, 20W-50
Above 5°F (-15°C) 1985-88 15W-50
Above 5°F (-15°C) 15W-40
-4° to 95°F (-20° to 35°C) 10W-40
-13° to 68°F (-25° to 20°C) 10W-30
-22° to 32°F (-30° to 0°C) 10W, 5W-30
Below 14°F (-10°C) 5W-20

Synthetic base oils:
32° to 105°F (0° to 42°C) 10W-30, 10W-40, 10W-50
All temperatures 5W-30, 5W-40, 5W-50