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85W90 gear oil.
5w30 in the winter or 10w30 in the summer.
5w30
Gastrol GTX. 5W30 only, with a A/C delco oil filter.
5W30 oil.
For a 2003 Chevy Suburban (all engine sizes), the recommended viscosity is 5W30.
80W90 gear oil.
6 quarts of 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..
where is the oil pressure switch on a 1999 chevy surburban