5w30. it should say that on the oil cap. it takes 6.5 quarts with a filter.
For a 2002 Chevrolet Trailblazer, the recommended oil is typically 5W-30. While 10W-40 can be used in certain conditions, it is generally not advisable for standard use, as it may not provide the optimal performance or protection for the engine. Always check the owner's manual for specific recommendations and consider the climate and driving conditions when selecting oil.
I have a 2005 trailblazer and it recommends a multi-grade oil for the enine. Mine is 5W-30. There is not much difference in the multi-grades like 5W, 10W and such, but I would stick to a Multi-grade of some sort.
manual recommends 5w and 10w
5W-30
Manufacturer recommends 5w30 but if you live in a warm climate you can use 10w30 without problems.
The 2002 Ford Expedition Owner Guide shows to use ( 5W-20 )
For normal climates, use 10W-30 oil.
Viscosity. 5W-30 is a "thinner" oil than 10W-40 is.
no
Moderate climates 2.0 2.4Ltr. 10W/30 3.0Ltr. 5W/30
5w
Either is acceptable. I use 5w30