There are a range of engine and transmission options on these, so you need to call an Isuzu dealer and ask them. Don’t rely on oil companies as these are often wrong, and don’t benefit from updated oil recommendations as manufacturers learn from available data.
If you don't have the vehicle handbook the dealer will be able to provide the oil specs, not that a string of numbers ever meant much to me.
I find it more convenient to go to the application catalogue of my favourite oil company and follow their recommendations, it has the benefit of being (mostly) more easily available.
Answers & Comments
There are a range of engine and transmission options on these, so you need to call an Isuzu dealer and ask them. Don’t rely on oil companies as these are often wrong, and don’t benefit from updated oil recommendations as manufacturers learn from available data.
If you don't have the vehicle handbook the dealer will be able to provide the oil specs, not that a string of numbers ever meant much to me.
I find it more convenient to go to the application catalogue of my favourite oil company and follow their recommendations, it has the benefit of being (mostly) more easily available.