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Check the Isuzu site and you'll need the year. Check either for "oil" under parts or look for the user manual online.
Note that the oil viscosity (10-30, 20-40,...) changes according to the how hot or cold the average weather is.
As for what brand, regular or synthetic,... That's personal opinion.
As for additives, I've used Slick 50 in 3 cars, 1 pickup, 1 SUV, and 1 motorcycle and they all ran smoother, but no noticeable change in MPG.
What else can I help you with?
On 2002 Isuzu Trooper where is the oil filter?
on the engine
Why does the oil lamp flash on a Isuzu trooper?
its faulty
Where is the oil sending unit located on a 1992 Isuzu Trooper?
The oil sending unit in a 1992 Isuzu Trooper is located within the car's engine. The oil sending unit is responsible for determining the oil pressure.
What is the oil capacity for a 1994 Isuzu Trooper?
4.2 QTS
Where is the oil drain plug on the 2000 Isuzu Trooper?
At the bottom of the engine oil pan.
What causes Isuzu trooper not to have power to ignition?
low or no oil pressure
When was Isuzu Trooper created?
Isuzu Trooper was created in 1981.
How do you Remove Isuzu 4 x 4 trooper oil pan?
with an axe
Is there supposed to be oil in with the spark plugs in a 1994 Isuzu trooper?
No, that's an indication of a problem.
What weight oil should you use for Isuzu Trooper?
5W-30, preferably synthetic.
What is the engine oil capacity of a 1998 Isuzu trooper v-6?
6.5 quarts
Where is the oil filter for a 1995 Isuzu trooper?
Its between the radiator and the engine on the bottom side.
