Gastrol GTX. 5W30 only, with a A/C delco oil filter.
6 quarts of oil.
85W90 gear oil.
Sae 5w-30
5w30
5W30 oil.
For a 2003 Chevy Suburban (all engine sizes), the recommended viscosity is 5W30.
80W90 gear oil.
Factory says-- 5W30 in the winter time. 10W30 in the summer time. Castrol GTX is a good oil to use.
ph3506
The Oil filter in under the motor of the truck..
5W30. Synthetic or conventional is up to you.
where is the oil pressure switch on a 1999 chevy surburban