Suzuki PE175 Owner's Manual page 7

"= GENERAL
MIXING PROCEDURE
TRANSMISSION OIL
Use a good quality SAE20W/40 multi-grade motor oil.
FRONT FORK OIL
For the oil in the two logs, use a motor oil of SAESW/20.
USE OF GENUINE SUZUKI PARTS
To replace any part of the machine, use a genuine SUZUKI
replacement part. Imitation parts or parts supplied from
any other source than SUZUKI, if used to replace parts of
SUZUKI origin in the machine, will lower the inherent
capability of the machine and, for worse, could induce
costly mechanical trouble.
METHODE DE MELANGE
HUILE DE TRANSMISSION
Utiliser une huile de moteur multigrade SAE20W/40 de
bonne qualité.
HUILE DE FOURCHE AVANT.
Pour les deux pattes de la fourche avant, utiliser une huile
moteur de SAE5W/20.