Here are some specific details about Isuzu Genuine DEO for 4FH1 engines:
* Viscosity: 10W-30
* SAE Grade: API CI-4/SL
* JASO Grade: DH-2
It is important to use the correct oil type and viscosity for your specific Isuzu engine. Using the wrong oil can damage the engine and void the warranty. If you are unsure about which oil to use, consult your vehicle's owner's manual or an authorized Isuzu dealer.